I'm kind of torn on the way this guy is being treated in the media because obviously what he did was horrendous and he should have known better and I hope he is put in prison for it, but not enough attention is being placed on his mother who said herself in her deleted post that she sent him down there.
Let me explain why I'm saying this- I'm Jewish. I was raised by a father who was fanatically pro-Israel. I was told by him and by other Jews my entire childhood that without Israel, the Holocaust would happen again. I don't even blame my father. He grew up in London during World War II just waiting for the Nazis to invade and throw him in a concentration camp. It made him incredibly paranoid. But that paranoia moves down through the generation and becomes brainwashing.
This is the result of that same brainwashing, except this person actually believed their mother enough to take action against what he wrongly perceived as a threat.
It is possible for Jews to recognize Israel's apartheid and genocide and condemn it and many Jews around the world are doing so, but it is really hard to break from 18 years of conditioning.