Between 1943 and 1945 OUN security police took an active part in
the slaughter of Polish people throughout Ukraine. After the war, in the years 1945–1948, Sluzhba Bezpeky conducted executions of Poles accused of collaboration with the communist government or actively opposing the Ukrainian resistance. In practice, however, executions of Poles were not limited to those two groups. OUN security police applied the principle of collective responsibility (i.e. killing entire families). At the same time, ethnic Ukrainians suspected of collaboration with the communists were also executed. The orders to apply solely the principle of personal responsibility were not given until May 1945. However, entire families were massacred beyond that date. and committed atrocities in order to demoralize the
civilian population; among these
NKVD units were those composed of former UPA fighters working for the NKVD. Areas of UPA activity were depopulated; the estimates of Ukrainians deported from 1944 to 1952 range from 182,543 in official Soviet archives to 500,000 . Mass arrests of suspected UPA informants or family members were conducted; between February 1944 and May 1946 over 250,000 people were arrested in Western Ukraine. Those arrested typically experienced beatings or other violence. Those suspected of being UPA members underwent extensive torture; some prisoners were burned alive. The many arrested women believed to be affiliating with UPA were subjected to months of torture, deprivation, and rape at the hands of Soviet security in order to "break" them reveal UPA members' identities and locations or to turn them into Soviet double-agents. Mutilated corpses of captured rebels were frequently put on public display. The SB played a critical role for UPA by responding to Soviet terror with their own terror. After the Soviet Army approach, the main target of SB activities became "Soviet agents and collaborators" as well as their families – as such they were exterminated (in many cases in a sadistic way). An identical fate awaited the families of those who didn't want "to take an arms in hands and join the struggle", as only for one instance 26 November 1944 in village Ispas (Chernivetska region) 15 families (41 persons) were killed due to one person's refusal to join UPA. Soviet investigative files are filled with references to follow-up investigations of brutal reprisals carried out by SB units against women suspected of "pro-Soviet sympathies". "In village
Diadkovichi SB unit murdered Sofia PAVLIUK, who heartily welcomed soldiers of the advancing Red Army." "On the night of 19 September [1944] in the village
Bolshaia-Osneshcha,
Kolkovskyi raion, the STRESHA band, murdered four women, in whose apartments lived Red Army soldiers." "On the night of 23 September [1944] in village
Mykhlin,
Senkovych raion, a SB unit of four persons killed four women and injured one. [The women] had gotten together to write letters to their husbands and sons [serving] in the Red Army." While targets of SB violence were certainly not exclusively women and girls, a close look at patterns of rebel violence against local citizens suggests that reprisals against "collaborators" was a euphemism for violence against ethnic Poles during World War II and the first two postwar years, when three quarters of the violence against "locals" was directed against ethnic Poles. ==Gender violence==