"Store keepers in America have a way of "Culling" the low life bastards who try to rob them."

Doesn't seem to work though does it? Surely the basic facts that the US and UK are similar societies yet you are much less likely to be murdered in the UK, whether by firearms or not, means that American people can't really criticise the UK's way of protecting its citizens. They should be much more worried about what is happening in their own back yard. Just saying!