Its stupid to think some cop had he been in that theater with a gun could not have killed holmes. Officer why did he get of 30 shots and you did nothing. Well it was dark ya know? Hell I am a decent shot and have been in a theater a ton of times. After your eyes adjust you can see. Sure it would be difficult to shoot well but if a guy walked up your aisle shooting the notion you would have little chance to hit him without killing tons of innocent people is a joke.
Also though saying it would always end better if citizens were armed is also not correct. You can't predict things like that. Sometimes it would end better sometimes it wouldn't.
I love how Houghtam says because he worked in a theater he knows how it would turn out is pretty funny.
i worked at a bank does that mean i know how to make sure a bank robbery is safer? no it doesn't.