I would think so, too. Just imagine the chaos which took place in that theater when this began to happen..No security was around to stop it. However, if many people had been there who were armed, this probably would not have happened in the first place and if it had, the injury and death would have been much less. I would rather have a neighbor nearby who is armed in such a situation than to know I have a policeman far away.
Actually, the place was swarming with cops.
Early reports say there were many cops on the scene for crowd control and security due to popularity of the movie.
I figure Holmes knew no one in the theater would be armed, or he wouldn’t have chosen it. The no firearms policy made the victims easy targets.