By Dennis Prager

For decades now, we have been told that there is a black-white divide in America. The problem with this belief that is that it renders moral judgment – of white police, of black crime and black incarceration rates, of white judges and jurors, and of black riots and protests - impossible.

It is, we are told over and over, all about “perceptions” – a “black-white divide” in the way each race perceives racial matters. This is how it works:

Many blacks see racism almost everywhere – especially in arrest, conviction and incarceration rates, and in white police interactions with blacks. On the other hand, whites (specifically, whites who are not on the left) think that white racism has largely been conquered, and therefore blacks’ disproportionately high arrest and conviction rates are the result of black behavior, particularly the high out-of-wedlock birth rate that has deprived the great majority of black children of fathers, not white racism.

According to the “black-white divide” way of thinking, these are simply two conflicting perceptions.

It is difficult to overstate how damaging this is.

It denies the very existence of the two pillars of civilization – objective truth and moral truth.

For every black and every white unwilling to condemn the protests over Michael Brown’s killing that took place before any relevant facts came out – their half-hearted condemnation of the riots notwithstanding – truth doesn’t matter. The protests, riots and liberal condemnations of the white officer began when no one knew anything about the killing.

There is, then, some validity to this notion of blacks and whites having different perceptions. But when the truth is knowable, one of the “perceptions” has to be wrong. Two distinct ethnic or cultural groups may have different perceptions of musical beauty or of what foods they like. But this is not the case regarding truth, which is based on facts. In Ferguson, either the black (and left-wing whites’) “perception” is not truth-based or the (non-Left) white (and black) “perception” isn’t.

Once the facts comes out, we are no longer speaking of “perceptions.” We are speaking of truth and falsehood.

The other victim of this “black-white divide” explanation is moral truth.

If the truth here accords with what the police officer said, he did not commit an immoral act when he shot Michael Brown. On the other hand, if he shot the young man for no good reason, he committed an immoral act.

But according to the it’s-all-a-matter-of-perceptions view, there is no moral truth, only black perceptions and white perceptions.

This all accords with the left’s views of truth and morality. Neither exists. Visit any university to confirm this.

The left is philosophically deconstructionist. Shakespeare doesn’t say what he wrote, Shakespeare says what the reader perceives. The notion of “original intent” as applied to the Constitution is, to the left, farcical. We cannot know the original intent. It’s all a matter of individual perception – or, more precisely, the perception of different socioeconomic classes, different genders and different races.

And, of course, for the left there is no moral truth. Morality is entirely subjective. “Good” and “evil” are individual or societal preferences. No more, no less.

Like truth, morality is just a perception, one determined by an individual’s race, gender, and/or class. That is why, for the left, no man can judge any abortion, no matter how late in pregnancy and no matter the reason – because men do not possess a uterus.

So who are you, white man, to condemn black protests? You have your perceptions and they have theirs.