IHE has the story.  The first comment is particularly apt, and bears quoting:

How sad, yet predictable, that the same right wing who is always going on about the perils of "political correctness" is ensuring the persecution of people who don't say and think what is acceptable. This witch hunt is yet another example of how the reactionaries speciously extol the ideas of freedom and liberty, but fear the true exercise of these lofty, vital concepts. A true discussion of class in this country would expose the extreme and pernicious transfer of vast wealth to a tiny minority, but perhaps this revelation is what the right is so anxious to quell.