Calling for genocide is not always controversial in the US

"The PLO delegation also quoted from a previous show during which Stern said, “The Arab world has to be taught a lesson, that we are the boss and you are going to be our dogs… let Israel loose… it could be taken care of in an hour; you could wipe them off the face of the earth…I’d blow up… the Palestinians… blow them all up and be done with them, and you won’t miss a night’s sleep.” If Stern were to make such comments about other ethnic groups, including Jews, the PLO delegation asserted, “the public outcry would rightly be fierce.” " (thanks Amir)