I think he has a point that both protests are comparable. I'm generally in favor of protests that disrupt a show, because that means they are effective in a way that protesting across the street rarely is. Beyond that, it's really a question of whether we agree with the protestors' point of view.
I think you'd need to attach the article to even figure out what Teachout's point was in the piece. I think the two protests are comparable only in the fact that a performance was interrupted by protesters. The rhetorical comparisons Teachout goes on to draw are another matter altogether.
