Actually, the fault here is the movie theater. The theater chain has banned the carrying of firearms nationwide in its businesses. If it did not have that ban, the crazy maniac that decided to shoot people for no good reason would have been shot himself BEFORE his rampage could begin...just like what happened to the two clowns that tried to rob a location at gunpoint in Pennsylvania. The crooks there took a couple of steps in the store, pointed their pistols at people and a man carrying a concealed weapon shot them...end of story.
15 police officers killed in Colombia helicopter crash (Reuters)
from the article: The gun lobby and the freedoms of the quiet American monster