Nick's discussion and Shenck v. United States...
It's a few years old but has good points.
http://www.thetruthaboutguns.com/2013/11/foghorn/second-amendment-yelling-fire-crowded-theatre/
It's a few years old but has good points.
http://www.thetruthaboutguns.com/2013/11/foghorn/second-amendment-yelling-fire-crowded-theatre/