TASER! Come a lil closer.

"The TASER Shockwave is a modular system, letting you bunch together dozens of these TASER X26 stun guns. That oughta keep those evildoers at bay -- when they get within 25 feet of this monster, you open up a can of electro-whoopass while you sit pretty with your remote control trigger 100 meters away.

This beast is designed to "instantaneously incapacitate multiple personnel," and is designed for violent crowds and riot situations."