Does the "freedom" in free speech mean freedom from censorship, or freedom from being drowned out? People often assume the former, but the latter is worth consideration.
In person, things are different. The dominant side can and often enough does drown out dissent. In that case, the intent is to silence. So that would be "censorship" in a cultural, not legal sense which would be hostile to the freedom of speech in the cultural sense, not legal.