People with no guns (like UK) dont get shot, if something kicks off, such as a gang fight, the worst that happens is a stabbing. In 'Murica if everyone has guns then people will get shot and therefore die. It takes one guy a couple of seconds to empty a pistol cartridge into a crowd, killing 6-8 people. Even if everyone had a gun the wouldn't be able to shot the attacker until he'd killed many people