pogrom
Concise Oxford English Dictionary © 2008 Oxford University Press:
pogrom /ˈpɒgrəm, -grɒm, pəˈgrɒm/
▶noun an organized massacre of a particular ethnic group, originally that of Jews in Russia or eastern Europe.
– origin early 20th cent.: Russ., lit. ‘devastation’.
'pogrom' also found in these Oxford entries:

