你的前提就錯了，當然難以理解

禁槍與否，不能隻看槍支的犯罪率，讀一下下麵這個對比，想一想為什麽
In America, it's called a "hot" burglary - a burglary that takes place when the homeowners are present - or a "home invasion", which is a much more accurate term. Just over 10 per cent of US burglaries are "hot" burglaries, and in my part of the world it's statistically insignificant: there is virtually zero chance of a New Hampshire home being broken into while the family are present. But in England and Wales it's more than 50 per cent and climbing.