"....People get into left-wing politics exactly because they oppose racism and injustice. Nobody who actually understands the pro-Palestine movement sincerely believes all these peaceniks and commies have suddenly morphed into Jew-hating Nazis in contradiction of their entire worldview. ..."

No, this argumentation is repeating the mistakes that make the gaslighting work.

They are not a "pro-palestine" movement, otherwise there would have been protests for the past 40 years of occupations.

They are an anti-genocide movement. They have been motivated an coalesced around a will to stop an ongoing genocide.

When you allow an anti-genocide movement to be mis-labelled as "pro-palestine", what you do is fall into the trap of being by implication.....ANTI-ISRAEL. From there you have failen into the trap and now you are an anti-semitic movement.

It's about stopping genocide. Don't keep stepping into the trap they set for you.