Piers Morgan needs to get real. Look at how European "gun free" countries are doing as far as their crime and murder rate. We cannot expect anything different than what has happened to them. America cannot to just "trust in God" to keep its population safe.
What the US should be investigating are the number of people who have serious mental issues and who seem to fall through the cracks. While some of them can be treated, the remainder need to be institutionalized.