Do you feel the same way about free speech zones? Don't like what someone says, just force them to move out of the way so they end up protesting to an empty audience. Naturally if it's a big enough protest you may have to use violence (tear gas, riot police ect...) to do this but hey, they still get their right to free speech, so i guess it's all good and democratic.
https://en.wikipedia.org/wiki/Free_speech_zone