“歹徒”一词起源于十九世纪早期,它的发明人是当时的警察。那时,警察们用这个词来专门指代那些从背后突袭路人掠夺财物的劫匪。他们的做案方式通常有两种,一是从背后用前臂卡住受害者的脖子,二是从背后伸手堵住受害者的鼻口。今天,歹徒一词已泛指那些图财害命、袭击他人的暴徒。美式防暴术对于化解歹徒的袭击十分奏效。通常,歹徒会从后方冲上来,卡住受害人的颈动脉,使受害人的血液循环受阻;或掐住受害人的咽喉,使受害人呼吸不畅;再或者 The term “gangster” originated in the early nineteenth century and its inventor was the police at the time. At that time, the police used the term to specifically refer to robbers who plundered property from behind the assailants. There are usually two ways to do this. One is to use the forearm to catch the victim’s neck from behind and the other is to reach over the victim’s mouth from behind. Today, the term gangster refers to those thugs who plot their fortunes and attack others. American riot control works well to defuse criminals. Normally, criminals rush from behind to seize the victim’s carotid artery, obstructing the blood circulation of the victim, or pinching the victim’s throat to make the victim unable to breathe or