vigilantism

1. There has been recurrent talk by the government of registering all Internet users, and many here worry that a wave of online threats and vigilantism could serve as a pretext to impose new limits on users.
   政府也反复提出要对所有互联网用户进行实名登记，而这里的许多人都担心一个网络威胁和治安的风波将可能作为对用户强加新限制的借口。
2. But it is definitely not vigilantism.
   但这当然不是推行强硬措施。

noun

1. the actions of a vigilance committee in trying to enforce the laws