Back in the day before he became the great defender of free speech, Bill Maher was the grumpy, contrarian and somewhat libertarian host of a discussion show called Politically Incorrect. I used to watch that show with a mixture of interest, amusement and frustration. Interest by the points of view brought by Maher and his guests; amusement from Maher’s quick wit and frustration because inevitably there was a guest saying something insightful that Maher would shut down for no good reason than he disagreed with him.