Some radio talk show hosts are masters of obnoxious insults. Callers to such shows should be prepared for humiliation if they dare to disagree with the host’s views. The host controls whether the caller can speak, so he can arrogantly berate the caller without allowing the caller to respond. Some shows, especially on AM radio, have hosts who are contemptuous of nearly everyone. They regularly use vitriolic language to stigmatize whole groups of people, such as foreigners, liberals, gays, or women. Some hosts don’t actually despise the groups they insult. They simply use antipathy as a form of entertainment, and they seem to feel no shame about the damage they do.