You can not compare the USA and the UK. The general population here have no desire to own firearms. We are not afraid of "freedom" and it is a fact that because of their general unavailability fewer criminals are armed. The US have a long history and different culture in which Gun ownership is deeply enshrined. This is partly why the Zimmerman/Martin case is seen very differently by both countries. It is not the case that all Brits want to oversimplify and misrepresent it as a race issue, it is seen as both a busybody/vigilante sticking his nose in and then using disproportionate force. Most are happy to leave law enforcement to the Police here and pulling out a gun in a fist fight/brawl is seen as bad form and cowardly even amongst scallys.