"Whatever happens tonight, the president, by saying such things, has already changed the world for the worse, and made acts of mass violence more likely."

Timothy Snyder correctly observes that the hate speech of the US president will embolden others to do the same, and act accordingly. It normalizes verbal and actual violence. Not speaking up against this is not an option.

https://snyder.substack.com/p/the-president-speaks-genocide