I see those who would object to a forum where ideas are exchanged, as effectively voicing their objection to free speech, which was enshrined in the First Amendment to the US Constitution.
Communists and tyrants have historically been the ones who most frequently objected to free speech, which our brave men and women have fought many wars to protect both in a military regard, and in battles in the courts. Usually, it is those whose designs are harmed by free speech that have the most reason to object to it.
I think that objecting to forums where ideas are exchanged, could be considered by many as being un-American.