They portray everyone who gets in their way as stupid, evil, genocidal nutcases who are secretly gay.

They did it to every Roman emperor who burnt down Judea.
They did it to every Pagan king who threw them out of Europe.
They did it to every Christian king who threw them out of Europe.
They did it to Bismark.
They did it to Hitler.
They did it to Saddam.
They did it to Gaddafi.
They did it to Assad.
They did it to every Muslim leader from the 1900's to now.
Now they're doing it to Putin.

You don't even have to be anti-Semitic, just in the way.
Putin isn't even strictly opposed to the Jews, he's just in the way right now and they makes him the devil.