Protect Freedom of Speech by any means necessary?

Al Franken took down a protestor at a Dean rally.

According to Franken,

"I'm neutral in this race but I'm for freedom of speech, which means people should be able to assemble and speak without being shouted down."

I have to admit, there have been numerous times I've wanted to do this. But I didn't, usually because the "heckler" was much more massive than I, as goes the general rule for obnoxious people. And I know no, wrestling moves. Go Franken!