Don't bother. Humans always need a good and evil, and by nature the enemy of evil has to be good.

I've had this conversation many times, it doesn't lead to anything. If Hamas is bad, then anything that Isreal does in order to eliminate Hamas, has to be good. If Russia is bad, than anything that Ukraine does, has to be good. If Putin is bad, than Nawalny has to be good. If Erdoğan is bad, than İmamoğlu has to be good.

This is obviously just as true vice versa, so it's not like the "other side" is any more reasonable to have a discussion with.