Turns out if you just label everybody you disagree with a perjorative, regardless of context, that perjorative starts to lose its context.

Ironically kind like with commie. After right wingers call everything left of Mitt Romney communism the general publics (at least younger generations) opinion on it softened.

Similarly to how people came to the conclusion if wanting police to not murder brown people and wanting Healthcare made you a commie, people didn't reject those beliefs, they just decided maybe being a commie wasn't such a bad thing.

Similarly if saying it's bad for Isreal to vaporize children and then make excuses for it makes you anit semetic, people aren't really going to be too concerned with getting called antisemitic anymore.