The left in Irael needs a black population to cause real hate with.
There are Ethiopians in Israel, as well as some black converts. Not much hate directed towards them, though, and I don’t think they’re very left wing. I say my morning prayers each day opposite an Ethiopian who is a committed Breslover Chassid, and a fellow practitioner of the scribal arts. Wonderful fellow. I only recently learned that he understands English, since we communicate exclusively in Hebrew.