Peter Berkowitz, writing at RealClearPolitics [1], has an essay about freedom of expression and the way it is threatened in our culture, especially at our colleges and universities. I have as little use for the censors of the left as for the censors of the right, and Berkowitz is on to something. Of course, a propos of my previous post on Father Zuhlsdorf, let me note that a little negative freedom is a good thing, and only worrisome when it becomes the exclusive understanding of freedom.