Chris Matthews seems to be under the impression that it's impossible for the federal government to declare martial law and start rounding people up into concentration camps. He neglects the fact that it has happened here and in many other countries in the past. There are definitely people here in America who would initiate and support such an action.
There are also criminals in this country who would initiate attacks on federal buildings and holocaust museums. Matthews seems to think that Stewart is encouraging that sort of behavior.
These are both examples of criminal acts, and they both go directly against that Stewart is talking about, which is simply upholding our existing laws.
Stewart should have taken the opportunity to condemn the guy who attacked the holocaust museum.