If he only picked on 1 race, I would assume many more people would have problems with his show, especially people of that race. but making fun of the mentally handicapped crosses the lineTosh makes fun of all races, which in our books makes it OK since he isn't singling out anyone.
its not ok to say he can make fun of diffrent races, religions, orgainzations, sexualities, etc. if its the ****** joke offends you, every joke should offend you. You can't be ok with him doing that to basically every race and creed and have a problem with one example.