Yeah there's many "racial jokes" used in those type of cartoon shows, but they are mainly used for humour. When someone makes in fun of someone just because they are Jewish, now that's beyond racisim.. that's bullying.
When there's racial jokes made on television shows like what you just mentioned, some of those jokes are actually true because of stereotypes (some stereotypes are actually true you know, like where do you think they came from? out of the blue?

). Like when people say Asians have small eyes, or Jewish people have big noses, I actually find them true. Another great example would be: Most Asians are nerds. Yes, this is 100% true, because they did mention most. I mean who do you find more type of people studying and getting A's, black people or Asians?
Sometimes jokes can be funny, sometimes they are just intended to put down someone's feelings of somewhat. But racial jokes never get to me, whoever calls me a nerd, I'm happy.
