vigilante [ˌvɪdʒəˈlænti]

例句:

• A vigilante group to stamp out...boorish male behaviour.
  来自Sounds
• Christian Slater has a new movie coming out next month in which he plays a vigilante.
  克里斯汀·史莱特有一部新片下月发行，他在片中扮演一个治安维持会成员。
  
• The growth of such vigilante gangs has worried community leaders, police and politicians.
  这类治安维持会成员组成的帮派的壮大让社区领袖、警察和政界人士十分担心。
  
• Where the psycho vigilante killer continues his daily strung out.
  疯狂游弋的杀手在继续物色他每日的猎物.
  
• People who are doing this vigilante type activity should be held accountable for that.
  来自VOA
• But this wave of violence has spawned a series of brutal retaliatory vigilante attacks.
  来自BBC