This Dissent article makes the case that a boycott shut down Glen Beck.

I find it dubious, but if it’s true – is that something for the left to take pride in?  I don’t like boycotts aimed at free speech, but that’s the civil libertarian in me.  The First Amendment to me isn’t just Constitutional Law.  Yes, I know it only applies to government.  But it also represents an ethos – that you fight bad words and ideas with words and ideas of your own and that broad discourse is inherently progressive.

Just my thinking.  For what it’s worth.