Short answers, pulled from the story.
Russian filtration camps were designed to compile counter-intelligence files, intimidate residents, and determine which civilians required displacement into Russia. This process served as a systematic approach to controlling civilian populations under military rule and monitoring resistance networks.
As of June 2022, most filtration camps existed in towns across the Donetsk People's Republic. U.S. diplomats identified at least eighteen camp sites set up by Russia in both Ukrainian and Russian territory using repurposed public buildings like schools and police stations.
During filtration, authorities photographed individuals, took fingerprints, examined phone contents, and conducted strip searches on men to find nationalist tattoos or signs of body armor bruising. Interrogators asked detainees about family ties, political views, and connections to the Azov Regiment before populating a database to track potential resistance members.
Mikhail Mizintsev, chief of Russia's National Defense Management Center, claimed over one million people had been transferred into Russia by May 2022. The U.S. State Department estimated between nine hundred thousand and 1.6 million Ukrainians passed through filtration, including two hundred sixty thousand children.
Women and girls faced risks of sexual abuse during their time in custody within these facilities. Reports documented beatings, electric torture, summary executions, and instances where staff forced detainees to give false testimony blaming Ukraine for destroying homes on camera.