Two months ago, I would have agreed with you Glenn, but after the anti-Semitic tsunami of "Hamas/From the River to the sea" expression of "free speech", I have come to realize that so many uninformed both young and old, can be brainwashed on mass. I now wonder if some red lines should be drawn. Any ideology such as Hamas, or the ideology of "from the River to the sea", or Nazism, all of which carry a genocidal DNA, may be dangerous. Yes, open and free discussion is a good ideal, but taken to an extreme, can be suicidal.