I think you're missing the point. An "attack on others" isn't something that most Americans should be limited, if you mean by attack what I believe you do (please clarify). I'm not sure why you think the power to limit speech can't be abused: even with strict protections, we've had awful majoritarian policies like the Sedition Act and McCarthyism. We protect everyone, Nazis and racists included, because if we give the government freedom to restrict the content of speech it will be abused when the "other side" gets power.