Well I wouldn't call access to such a forum a right either. I'm just considering that it might be a progressive thing, in the same way that public TV is. Inviting and even encouraging public participation in society in more ways than just offering them to the right to vote or annoy people on the street seems like a good thing to me. In fact I am not so sure about the right to annoy people on the street either, as it is basically a confrontational medium by nature. Confrontation + emotion = conflict and violence (and/or to unexpressed hatred in the short term which can later get expressed as violence etc anyway).