vigilantism

• vigilanteism

From vigilante +‎ -ism.

vigilantism (countable and uncountable, plural vigilantisms)

1. The activities of a vigilante; acting outside of legal authority, often violently, to punish or avenge a crime, right a perceived wrong, etc.
   • 2016 February 6, James Zogby, “Israel’s prickliness blocks the long quest for peace”, in The National‎^[1], archived from the original on 22 May 2021, retrieved 8 February 2016:

     Mr Shapiro also criticised the way Israel governs in the occupied lands, saying “too much Israeli vigilantism in the West Bank goes unchecked,” he said.