The guy advocated mass murder and put the blame for anti-semitism on the victims. He can go to hell, and the hypocrisy of the far left has never been clearer when it comes to "speech has consequences".
Did he? Neither, surely, follows from those tweets cited above.
He wants for thousands of people to "go missing" in a callback to an event that almost everyone knew would end with the gruesome discovery that it did.
And he more than once said that Israel is the cause of anti-semitism (and even described it as "noble" because Israel), which puts him about four thousand years off the mark as to the origin.