Jews are hated by some people all over the world because all over the world there are tyrants who inculcate this hate to deflect attention from the evil they themselves are doing to their people.
Jews are hated by some people all over the world because all over the world there are barbarians who hate the idea of Law and its threat to their worship of Blood, Appetite, and Death. And Jews collectively can't help being a symbol and a reminder of Law, however well or poorly individual Jews may uphold Law.
There are many overlaps between these groups.