Well, there are fools, and then there are fools.
But what brought me back to make a posting here was the recent tragedy in the Akihabara district of Tokyo. "Seven dead in Tokyo knife attack." Here's a link to the story on the BBC's website.
http://news.bbc.co.uk/2/hi/asia-pacific/7442327.stm
The point being that a mentally deranged man went on a killing rampage in a country with extremely tight gun control. He used a knife.
http://news.bbc.co.uk/2/hi/asia-pacific/7442327.stm