These agitators are venting in mob fashion. They have nothing better to do with their time than emote over some guy who dissed them. Same as the gang bangers and punks you see in New York.
Does Mark Belling have issues with speaking slurs to people? If so, then Mike Savage should be off the radio. Bob Grant should be off too. I've heard Mark Belling once, and he doesn't sound the slurring type. Besides, there are those people who have a word or two for EVERYONE and that's just how they are.