Hmmmm.... these acts should be construed as criminal in a time of war.
Declare martial law.
setup a military tribunal, and sentence any of these slackers to at least one year of hard labor - in Iraq, repairing oil pipelines.
If this isn't terrorism I don't know what it is. These losers are Camp X-RAY material in my opinion. If these spoiled adolescent adult idiots can't find something better to do than endanger national security and the right to political assembly, then I think NYPD's Finest should show a little NYC hospitality to these punks and give them a little lesson about the Constitution in a back alley.