Here's a good reason to impose gun restrictions........ON COPS!!
http://www.slate.com/id/2154631/?GT1=8805
Cops here get very little target practice. They used to hire the range owned by my gun club, but the cops were refused use of the range because they were such poor shots they were damaging range equipment.
I knew a few cops in the Army Reserve (nice guys). They said (sort of joking) that if you have to shoot, make sure you kill them, otherwise the bad guys will tel lies about you in court. This sort of attitude may have something to do with what was reported as happening in NYC.