Ochota Massacre (in Polish: Rzeź Ochoty - "Ochota slaughter") - a wave of German-orchestrated mass murders, robbery, looting, arson, and rape, which swept across the Warsaw district Ochota during August 4–25, 1944. The gravest crimes were committed in Ochota hospitals, in the Curie Institute, Kolonia Staszica and the concentration camp called "Zieleniak". In all, about 10,000 residents of Ochota were killed, their property stolen and the district systematically burnt down by German forces.