Few things better exemplify the inability of the left to tolerate contrary viewpoints than the recent struggle session framed as an "Internal Town Hall" when CNN CEO Mark Thompson was confronted by leftist staffers who claimed they were offended by the existence on their network of conservative commentator Scott Jennings.It seems they agreed with recent NewsNight guest Cameron Kasky, who arrogantly declared to Jennings that he was somehow not permitted to use the term "illegal alien" despite the fact it is a legal term written into immigration law.