RE THE RULE OF LAW

I don't know exactly what it means, in practice.

One can find vigilantism, even in local police forces, or by individual officers within them, as well as among private citizens, of various countries all over the world, not just here, by the way.

I would call it vigilantism, but it can be done by established law enforcement agencies. The obverse side of official vigilantism , one obverse side, at least, is selective enforcement, where only a certain area, population, ethnic group, etc., is targeted for heightened official vigilance.

One can have, overlain on this selective enforcement, lay authority, third parties re ethnic or religious violence, violence against or from foreigners, etc.

This is normally what is meant by vigilantism, is unofficial force, but I believe it makes sense to call official selective enforcement
' official ' vigilantism, or say political oppression; in poorly organized societies, there is little difference really.

It is a more complex subject, once one gets into looking at it.