For the record, I have not advocated censorship of views opposed to my own (with one exception: right wing hate groups like the Klan and National Alliance–they recruit people to kill others). It is an embrace of the First Amendment, not an affront to it, to meet hateful speech with more speech. In political contexts, conservatives heckle me all the time. That’s politics. If I were to speak at a FrontPageMag conference or any other Horowitz outfit, I’d certainly expect a noisy crowd. I would not think that protests were an attempt to censor me.
There may be no specific “right” to disruptive protest, but there is a proud tradition of it; sometimes it is a necessity.