Sorry to go back to the kinder egg issue, but their banning the US isn't to do with safety, but to go with food hygiene (as in certain things other than packaging can't touch the food I believe (as I found out when sending kinder eggs over to American friends - they got through!)).
But anyway, it seem like there are a lot of opinionated people here who have probably never actually set foot in the country. I lived there for a number of years and never felt unsafe. I never even saw a gun in all the time I was there and most of the Americans I mixed with were anti-gun.
I think the attitude is a bit like nuclear disarmament - nobody is going to be first to get rid of nukes even though their potential is horrendous, because another country still has them and that would make us feel less safe (despite the fact many countries don't have them at all and are no less safe for it).
My kids did lockdown drills as a matter of course, but they weren't told what they were for, it came under the banner of fire drill/hurricane drills etc. That does make me sad though.
But all those saying how unsafe it us and how they wouldn't set foot in the country, it:s really not like that day to day. Which doesn't mean I don't think there's a problem. But it's not like down town Baltimore for most people. I feel relatively safe in the uk, bit I don't think we should kids ourselves that everything is perfect here, I certainly try and avoid certain areas on a Friday or sat night due to the massive drinking culture and ensuing aggressive behaviour, like someone mentioned up thread.