Gun laws were extremely lax in the 1940's and 1950's and people owned machine guns. Killings were still very, very rare. The states with the laxest guns laws and the most guns have been the safest. Wyoming, Idaho, the Dakotas and Montana have had extremely low crime becasue they were Christian and homogeneous. Now society has become degenerate and black, Asian and Hispanic third world gangs are using these guns to kill people. Also, drug use is on the rise which fuels many of these killings. The NY shooter was a heavy drug user, the PA shooter was a Nazi and the WA state killing was because of an affair (not that it excuses anything). I still think drugs will come out as one of the reasons for the killing of those five kids.