事实上，美国的枪文化已是自由的威胁 — — 近几十年来，总统、参议员、公众领袖都被枪杀过，更有数不清的刺杀官员事件发生。
Indeed, America’s gun culture is a threat to freedom, after the murder of a president, senator, and other public leaders, and countless assassination attempts against public officials over recent decades.