The SS and police conducted mass actions against civilians with alleged links to resistance movements , their families , and villages or city districts . Notorious killings occurred in Lidice , Khatyn , Kragujevac , Sant ' Anna and Oradour-sur-Glane , and a district of Warsaw was obliterated . In occupied Poland , Nazi Germany imposed the death penalty on those found sheltering ( or aiding ) Jews . " Social deviants " — prostitutes , vagrants , alcoholics , drug addicts , open dissidents , pacifists , draft resisters and common criminals — were also imprisoned in concentration camps . The common criminals frequently became Kapos , inmate guards of fellow prisoners
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Wola massacre
Holocaust victims