We don't like traitors.
Well they are traitors, sure. Keep in mind that my first priority is fighting anti-semitism.
I see these leftist Jews as pawns that need to exist. If all Jews showed the same beliefs, it would make it easier for brainwashed leftist whites and university psuedo-intellects to hate us, boycott us and use violence against us.
Compare an anti-zionist saying "all Jews deserve to die" to "Not all Jews are bad, look at Noam Chomsky, I just dislike zionists".
I see this often, and it's more positive than anything.
On a sidenote, flaming these leftists is foolish, it makes us look like extremist nutcases to the world.