May get you a beat down? I can guarantee you that if you are wearing a gas mask to a police riot control invitation, you are going to get yourself a police loving like you have never seen before.
I keep mine for the inevitable stand off with the ATF. They launch in the tear gas prior to breaching and instead of finding me on the floor crying they see my masked face behind a gun barrel.
Actually, that was my justification also; that and if I have to go out and wash fallout off the roof.( , I think I'll tip the tables on the night vision with a couple of rechargeable 12 million candle power spotlights down the hallway .[nothome][nothome][srn] I've seen the WTO protests where the cops struggle and remove a kids swim goggles inorder to blast him with o.c.!