It's hard, I agree. When someone hates you it's by far the easiest path to hate them back. But that's not going to change anyone's mind. It will make them double down.
Edit: I'm not bashing Queers for Palestine. It's brilliant. It's probably changed some peoples' minds in that region of the world. You don't hear about it, of course, because when people reconsider long-held and culturally dominant beliefs they often don't say anything about it for a long time. They reconsider quietly. Bigots and hate-mongers and war-mongers are loud.
One big rule for interpreting culture is: the craziest, meanest, most bigoted people are almost always the loudest. The wise whisper and the idiot yells.