When I asked about ethnic jokes, MacFarlane offered the enlightened-liberal defense—at first. “We are presenting the Archie Bunker point of view and making fun of the stereotypes—not making fun of the groups,” he said. “But if I’m really being honest, then maybe there’s a part of me that’s stuck in high school and we’re laughing because we’re not supposed to. I don’t know the psychology. At the core, I know none of us gives a ****.” He went on, “Some people say that stereotypes exist for a reason. I’m in no way qualified to make that determination. But I’m sitting in a room with a writing staff that is in large part Jewish, and those are the guys pitching the jokes.”

http://thinkprogress.org/alyssa/2012/06/13/498566/seth-macfarlane-on-crude-ethnic-humor-and-family-guy/

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