I wouldn't be surprised if there aren't anti-Semites who actually believe that. I've seen some who claim that Jews are masochists by nature.
Of course, that leads to the ultimate self-contradiction.
"We need to beware of the Jews because they invented anti-Semitism. But wait--isn't THAT an anti-semitic statement? Okay, let's not be anti-Semites because we don't want to play right into the Jews' hands. Oh no! I'm still making anti-Semitic statements even though I'm trying not to! THAT must be what the Jews really want me to do! Aaaaaugh!"