Because when a white person is called a racist, they understand (a) they are being alienated by the threat of violence (b) they are being alienated so that others can achieve self image by denigrating others, (c) they are aware that only european whites and east asians have succeeded in building high trust polities. (d) they are aware the critics are just hateful and envious.
“No man is a hero to his debtors.”
And the whole world is our debtor.
We dragged makinkind one civilization at a time out of ignorance, superstition, poverty, starvation, hard labor, child mortality, early death, disease, tyranny, the vicissitudes of nature, and the uncertainty of a universe hostile to human life, and they resisted, kicking and screaming all the while. All these people are doing is kicking and screaming at being dragged out of their ancestral childhoods.
A parent must never take the words of his teenagers seriously, any more than europeans must take the words of the underclasses seriously.