"Pogrom" is a Russian word meaning to "to wreak havoc" or "to demolish violently." This term was first coined when there was an anti-Jewish riot in 1820 in Odessa, part of the Russian Empire. The term describes a riot started by anti-Jewish protesters against Judaism. The word pogrom was most commonly used in the early 1880's during the rioting in the Russian Empire and Ukraine. However, pogroms continued throughout the Holocaust. During the Bolshevik Revolution of 1917, local anti-Semitic groups would collaborate with police and government officials and would arrange times to rape and murder Jewish people. Pogroms occurred in Belorussia (Belarus), Poland, Ukraine, and Russia. From 1918 to 1920, tens of thousands of Jews fell victim to pogroms. Throughout the 1930's, pogroms continued in Germany in the form of street violence. These pogroms included burning Jewish homes, businesses, and Synagogues. During World War II, the German government encourage the people to start pogroms, one of which killed at least 8,000 Jews. In 1941, the Germans abandoned the practice on the eastern front; however, some police still annihilated entire Jewish communities. Unfortunately, pogroms did not end with the Holocaust. For example, in 1946, rioters killed 42 Jews and injured an additional 50. Pogroms are one of the primary reasons of the large Jewish westward migration.