Gun Crime USA
This may not be the cause of all gun crime in the USA but it's an indicator of what is acceptable when individuals are bombarded with emails offering guns as prizes.

I get about five of these emails a day. It's probably a scam of course to get your details and you won't be entered for a competition to win a rifle anyway. However, the scammers must think there are lots of people who want a free gun.
Twithay?