I just watched an intesting report yesterday at tv. It was regarding criminal acts in the states. So just some figures to think about 
Murdered by Guns per year:
Germany: ~350
UK: ~150
France: ~240
Japan: ~130
Australia: ~60
Canada: ~35
USA: 
11.600 
You have really to think about some laws in the states regarding weapons. The very intersting part was also, that on the opposite site of Detroit, at the Canadian part a city (do not remeber the name of it but has about 400.000 inhabitants) has just 1 murder within the last 3 years. How many people are killed in Detroit every day?