Let's start by just putting this on the record: When colleges and universities give the line about how much they value the free exchange of ideas, it can now be said without the slightest doubt that this is a total load of crap. They value no such thing. If they're committed to any principle whatsoever, it's that the activists who call their campuses home must never be challenged with the prospect of having to deal with someone who expresses an idea contrary to their own.