Holocaust victims
After the Nazis occupied parts of the Soviet Union, they treated Soviet civilians terribly.  During the siege of Leningrad, more than 1.2 million civilians died.  Nazi soldiers destroyed thousands of peasant villages across Russia, Belarus, and the Ukraine.  In 1995, the Russian Academy of Sciences reported that the Nazis caused 13.7 million civilian deaths in the occupied Soviet Union, including Jews.  This was 20% of the area's population.  These deaths included: