We need to make it so cringe to behave like this that people will stop doing it naturally to distance themselves from those people. I already look down on people like this myself. People in the West do not utilize societal shaming enough I feel, so much focus on individuality that people are forced to tolerate that some people are terrible humans because otherwise they'll be on the side of NAZIS or whatever for wanting people to be civilized.
I think it's already trending that way, but the effects are slow to arrival.