Yaakov Kirschen, the cartoonist behind Dry Bones, has put together a fascinating academic paper that traces the use of coded anti-semitic imagery in political cartoons during the past 80 years.
He shows, very effectively, that the same memes were being used by the far-right Nazis, the far left Soviets, and modern American (and arab) political cartoonists - shorthand memes to demonize Jews.
Z Street, where he is elaborating on his research. It is really good stuff.
More details here.