When is political violence justified?

[Anomalocaris]

i know exactly what it is.  some people would like to pretend it is nothing more than a isolated riot, but in fact it is just one of many expression of a broad based violent reaction to long entrenched social, and economic structure that is widely perceived to have iniquitously denied upward mobility to large segments of society.

Think of it as a particularly noted hurricane in a period of extreme global warming.   Whether the person tries to pretend it is nothing more than an ordinary hurricane signifying Nothing tells a great deal about his stance on global warming.