Filtration camp system in Chechnya

Filtration camps, also known as concentration camps, were camps used by the Russian forces for their mass internment centers during the First Chechen War and then again during the Second Chechen War. == "Filtration" system == The term "filtration point" re-appeared during the First Chechen War as name of the facilities illegally created for the purpose of holding the persons detained by the federal forces in the course of an operation "to restore constitutional order" in Chechen Republic territory in 1994–1996.

Source: Wikipedia — Filtration camp system in Chechnya (CC BY-SA 4.0)