Last week a shooter killed five Dallas policemen and wounded nine others at a protest held in Dallas to protest the killings of black men in Minnesota and Louisiana. This is the largest single killing of police officers since 9/11.

Too many people remain focused almost exclusively on police abuses, and such abuses clearly exist. There’s absolutely no doubt that they do. And for all the light shined on such abuses, they continue to occur. Some police departments have made great strides in dealing with the issue of discriminatory “over-policing” of minorities, especially blacks, and some have done far less to address the problem of police abuse, especially of black males.

Police officers need to realize that the problem isn’t going to just die down and go away. It won’t, not so long as abuses continue, so long as black anger increases, and so long as there are three hundred million guns in the United States.

Yet, from what I’ve seen reported, the Dallas police department is one of those that seems to have been trying hard and doing well in this regard, one headed by a black police chief, and one where the officers killed were on duty protecting a peaceful demonstration, ironically against police excesses – until the shooter opened fire.

That said, the black community has to face up to some very hard facts as well. By any standard, even taking into account poverty, poor schooling, and various systemic problems that cause discrimination, including racial profiling, the crime rate among young black males is unacceptable. Other impoverished minorities face a great many of the same structural and social problems, and the crime rate of their young males comes nowhere close to that of young black males. Drive-by shootings and random violence and killing of children as a result of gang fights are not deaths caused by police behavior.

Yet all too many on each side of this divide, and it is a divide, refuse to see or address their own problems, and the anger and the shouting seem to grow louder. While neither side is totally blameless and neither side is totally to blame, too many on each side are behaving that way. In effect, it’s another example of polarization.

David Brown, the Dallas police chief, said it well, that the divisiveness has to stop, but it won’t stop until the majorities and minorities on each side in all metropolitan areas and towns take a long, hard, and honest look at their own problems. There’s been progress, but not nearly enough, and we as a society are running out of time.

Theoretically, the words “diva” or “divo” are Italian for the most prominent singers, either female or male. Among professional classical singers, usually when those terms are applied to a singer, they’re meant in a much less complimentary way, a form of shorthand for a self-important pain in the ass, who makes life difficult for colleagues, conductors, accompanists, or anyone else who does not worship at the diva’s/divo’s feet.

While such divas or divos may be even outstanding and highly acclaimed, few end up having long or lasting careers. One of the very basic reasons for this is that, compared to the number of extremely talented professional singers, the number of top-flight and high-paying opera houses is very limited, and the number of good roles suited to even the best singers in each voice type is also limited.

There’s also a misconception that divos and divas only exist in the world of music, but I’ve certainly run across them in other fields, particularly in politics, but also in education, and even among F&SF writers. No… I won’t name names, because that’s not the point of what else I’m going to say. The point is simple. If you’re enough of a pain in the ass, no matter how talented you are, sooner or later, you’re going to be replaced. If you have enormous talent and ability, it will occur later, but it will happen. This is true whether you’re a writer, an artist, or an editor.

And if you’re a beginning author, you won’t even get to the point of being recognized as a divo or diva. I know. I’ve seen it happen on more than a few occasions, where an author insists he knows more than an editor and that the editor doesn’t know how to market his book or doesn’t understand his genius… or something else. In most cases that I’ve seen, those writers never really went anywhere. [And by the way, from what I’ve seen, in writing, there are more divos than divas.]

I’m not saying that editors are always right. They’re not. But almost always, a seasoned editor is far more likely to be right than a beginning author. The seasoned editors got there by having a better track record than other editors, and if you don’t think editing is a competitive business, talk to a few editors.

All that doesn’t mean an author can’t ask why, especially if the asking is done politely. And it doesn’t mean an author can’t suggest. But unless you’re already at the top of the bestseller lists, you’d best not demand. And even being at the top of the list isn’t proof against divo-self-destruction of career. I’ve seen that happen, too.

Just like singers, we authors are kept in business and kept writing by having enough people buy our books that the royalties pay the bills for us and for our publishers – and the same is still true if you self-publish. Most editors handle a number of authors. They tend to resent authors who take up a great deal of their time unless those authors produce incredibly good sales numbers, and they still resent those authors, which means, if you’re one of those, when the sales numbers drop, that editor isn’t going to be quite so solicitous. And if you’re not one of those authors, and are barely making the sales cut, when someone else comes along who’s much easier to work with, your books will go on the back burner, and that’s if you’re lucky.

I suppose the point I’m hammering is simply: Be the best you can be, but never be a divo/diva.

Most of us, as human beings, tend to feel very strongly about those beliefs that we hold dear. In most places, those strong feelings center on religious faith, sometimes on the family, sometimes on political or social beliefs, and to a lesser degree on other matters, at least for most people, from what I’ve observed. There’s nothing inherently wrong with believing in something strongly, even passionately, but most of human history is replete with violence seemingly triggered by those passionate beliefs. Why do I say “seemingly”? Because, in the overwhelming majority of instances, those seeking power and dominance use those beliefs in causes against others in order to bolster their own position and power.

Henry VIII’s split with Rome and the Catholic faith, and his creation of the Church of England, had little to do with the vast majority of tenets of the Catholic Church, but everything to do with his desire to divorce his queen and remarry in order to have a son to inherit the crown – surely an issue of power and dominance.

Luther’s ninety-five theses nailed to the door of Castle Church in Wittenberg, Germany, sparked the Protestant Reformation, which was initially far more about reforming abuses of power in the Catholic Church than about changing fundamental beliefs in God and Christ.

The split in Islam, between Shia and Sunni, arose essentially over the issue of who should lead the faith after the death of the Prophet Mohammed in 632 A.D. While other issues separating the two have arisen, the split was basically about power and dominance, and it remains the same today.

While Ireland has seen a long history of Protestant/Catholic conflict and animosity, that conflict is far more rooted in power than doctrine, since the vast majority of those in power in Ireland after the end of the Williamite War in 1691 were, prior to the Irish Revolution of 1916, members of the Protestant Ascendency. After the partition of Ireland and the end of most hostilities in the Republic of Ireland in 1923, the Protestants retained economic and social control in Northern Ireland, and that conflict continued almost unabated until the agreement of 1998, although hostilities still simmer, largely because of economic and political inequalities.

The American Revolution, for all the talk of freedom, was about who controlled the resources and the economy of the then thirteen colonies and about British restrictions on trade and manufactures.

The Taliban and ISIS, while they claim to be Islamic, seem to be far more interested in power and control than in any of the more peaceful aspects of Islam. And certainly, the Crusades were far more about power and plunder than religion, despite all the rhetoric to the contrary.

This desire for control, and wanting to have government force people who are different to “do things my way” remains a disturbing aspect of politics in the United States, and elsewhere.

No matter what anyone may say in religious terms about the abortion/anti-abortion conflict in the U.S., that conflict is purely and simply about who has control of a woman’s body – the woman or an outsider, whether that outsider is either a religious belief, her husband, or the government. All the rationalizing and reasoning, all the saying why, doesn’t change that basic fact. It’s about control. So is the issue of who can marry whom.

Yet government has to have laws, and enforce them, or there will be chaos. As a number of politicians and sages have noted, liberty also requires order. Order requires popular support. So any law that enslaves or unnecessarily controls a significant percentage of the population eventually creates unrest and often violence. This rather obvious truth tends to be ignored by those who use beliefs to obtain or maintain power over others.

As far as laws or practices being unnecessarily controlling, there’s a simple question that can resolve many of those questions. Does the law in practice physically or economically harm certain groups of people? It would seem to me, simple man that I am, that believing in a different god or the same god in a different way harms no one. Taking up a gun to force that belief does so.

The bottom line is whether beliefs are used for self-motivation and guidance or whether they’re used to force beliefs on others – or to harm or kill those who believe differently.

Beware those who trumpet beliefs while brandishing laws or weapons and ask who will gain control of what – and how.

The other day I ran across an interesting statement from a scientist (which I’d attribute if I could recall where I read it) to the effect that the “universe has no colors.” He went on to explain that what we see as colors are essentially the different energy levels of photons either emitted by or reflected from objects and that colors are the interpretation of those levels by our brains. Experiments and observation have determined that this visual perception differs from species to species and between men and women. Women perceive more different shades than men in the ranges of blue and green.

None of this is necessarily particularly surprising, and while colors may only be an interpretation of photonic frequencies by my gray matter, I certainly prefer that interpretation to shades of gray. To me, it would seem that living in a world of gray would be rather depressing, but that just might be my personal bias.

Years ago, Charles Harness wrote a book entitled Redworld, set on a world around Barnard’s Star where colors and color perception are very different because Barnard’s Star emits largely reddish light and the planetary atmosphere is an oxygen/ammonia mix. The result is that all the planetary phonic frequencies, if you will, are overwhelmingly shades of red and ochre, and the intelligent humanoid life there has evolved to discern a wide range of reddish shades, but infrequent “colors” like violet or yellow are perceived as gray or black. I won’t speak to the accuracy of this depiction, but since Harness had an undergraduate degree in chemistry, I would suspect it’s largely correct.

In retrospect, Harness was on to something, although I didn’t see it that way when I first read the short novel nearly thirty years ago. Since “colors” are more easily and quickly distinguished than are shades of gray, that interpretation enhances our perceptive ability, and as a result, our survivability as a species, and the same would have held true of Pol and his people in Redworld.

Yet how many people consider how perception colors not only our views of the world [yes, it is a terrible pun], but biases how we think? And yet, that perception of the universe varies between individuals and species… and yet, as the protagonist in Redworld is told, white [or blond] for him is black.

Earlier this year, all of the Democratic candidates for the presidency proposed a new tax, one targeted almost exclusively at the wealthiest Americans. Such a financial transaction tax (FTT) would impose a sales tax on trades of stocks, bonds, derivatives, and other securities. The tax levels proposed differ, and range from one basis point [one hundredth of one percent] to as high as fifty basis points, although most economists seem to think the lower ranges will actually generate more tax revenue. Just to keep this in perspective, an FFT of one basis point would raise revenues of just ten cents on a transaction of one thousand dollars. A $100,000 transaction would raise just ten dollars.

That doesn’t sound like it would raise that much in revenue, but consider that annual trades in stocks alone in the U.S. are approaching fifty trillion dollars, and the total trading in stocks, bonds, derivatives, and other similar financial instruments exceeds six hundred trillion dollars, according to the Tax Policy Center. Depending on the tax level chosen, annual revenues would range from around $40 billion to as much as $210 billion.

The interesting aspect of the FTT is that the vast majority of the taxes would fall on the wealthiest Americans and particularly on high volume automated securities trades, those trades which contribute the least to economic growth and perhaps the most to the pocketbooks of hedge fund managers and the like. Over 75% of the tax would fall on the top fifth of the population in earnings, and 40% on the top one percent, but even for the top one percent, the tax would increase their overall tax liability by less than one percent, and for those in lower income brackets, the impact would be less than a quarter of a percent of income.

Some of those in the finance industry complain that such a tax would reduce trading volumes without decreasing market volatility, especially if an FTT is imposed with tax levels as high as those under consideration in Europe, but even the highest rates proposed to date in the U.S., by Senator Sanders, are well below the proposed European levels. Critics also suggest that an FTT would turn investors away from U.S. markets, but in practice that seems highly unlikely, given that such taxes either already exist elsewhere or are under active consideration.

Critics of the FTT tend to overlook several basic points. First of all, high-speed stock trading is simply using advanced technologies in order to get information a millisecond before other traders. High-speed trading doesn’t make markets more efficient, but it does increase stock prices, out of which the traders make money. It’s actually a sophisticated form of an old practice, called front-running, which was illegal. High-speed trading doesn’t create efficiency, but it does create the possibility of debacles like the “Flash Crash” of May 2010.

Second, use of high-speed computers, sophisticated algorithms, and confidential information unavailable to small investors doesn’t improve the productivity of financial markets. Such technology and systems just tilt the market in favor of those traders. Likewise, trading in ever more complex derivatives – making bets on bets – doesn’t add real value. It’s merely speculation that makes the system more vulnerable to big losses, as occurred in the financial crisis of 2008.

Third, one of the aspects of the finance sector that’s been overlooked is that it now produces a quarter of corporate profits while creating just 4% of American jobs. Who says speculation and computerized market-churning doesn’t pay?

Given all that, why shouldn’t we push for a financial transactions tax? Especially since most of those insisting that we need to balance the federal budget are the very people who’d pay most of the tax?