Jon Chait has some good, clean fun with the protests against Michael Oren's appearance at UC Irvine earlier this week:
The slogan of the protesters here was "Michael Oren! Propagating murder is not an expression of free speech!" Of course, you will note that at no point in Oren's speech does he murder anybody. So, we are back to the foundational belief that free speech ought not to apply to anybody who expresses views the campus left dislikes.
On the other hand, we don't know for sure that Michael Oren didn't kill anyone before or after his speech. And in the absence of proof that he didn't kill anyone, I think we have to assume, based on both Israeli behavior in Gaza and on the rules governing blogging, that he did.