Another fact is that only IDF is trying to fix the situation. And third one is that the biggest reason the left is defending Hamas is historical: because PLO was leftist, modern leftists must defend the current incarnation of it.
I wish the left grew some actual values, they seemed to lost them all in 1990. Doesn’t matter if they’re something I disagree with. Just have something instead of mindlessly repeating what you did back when Communism was still a thing.