But it is more prevalent in developing countries than in the developed world. The major exception is the US, where the ready availability of firearms contributes to one of the highest homicide rates – and the highest gun homicide rate – among developed countries.
认为精神病人有危险的现象是全球性的，但发展中国家的这一情况比发达国家更普遍。主要的例外是美国，由于容易搞到军火，美国的杀人率——以及持枪杀人率——在发达国家名列前茅。