One thing I wandered towards the end
On Friday nights, hospitals tend to be very busy from alcohol related injuries from people just hurting themselves etc. so it really pissed me off that the hospital was so empty after a night when violence was legal.
I know it's a movie, I know it's an unrealistic concept but out of everything this seemed to annoy me the most. I liked the movie, just as a "see once and forget" kind of movie, but I would have really been pleased to see hundreds of people trying to get into the hospital.