Lawfully armed citizens aren't the problem. They never have been. It is true that on rare occasions someone will commit a crime and it later turns out they had a concealed carry license. Anti-gunners are quick to seize upon them as shining examples of why they were right to want to ban such practices, but it is the very rarely of such acts that make them newsworthy in the first place. There are far more stories of police officers assaulting their wives and doctors killing their patients than there are of ccw licensees misusing their firearm. The truth is that the sort of person who supports "park bans" or any other firearm ban isn't really interested in reducing crime. They know such policies will not work (how can a law prohibiting guns stop a murder when a law prohibiting killing someone in the first place fails to do so?). What they're really looking to do is further their gun ban agenda in a wild fantasy that gun bans will make them less accessible to criminals. Because, of course, that worked so well with drugs.