This is the natural end of all radicalism. It is why it appeals to the hive minded. The anti-racists would merrily round up white people and kill them, not for any crimes they committed, but as a form of human sacrifice. That is what the regular executions in Paris became during the Terror. They were purification ceremonies, not punishments for the guilty, but purity was always just one more head in the basket away. It’s the inevitable end of all mass movements when there is no limiting principle.