In 1871 , 19 Chinese men and boys were killed by a mob of about 500 men in an area of Los Angeles known as '' Negro Alley '' which had been known as a dangerous area for two decades . It was one of the most serious incidents of racial violence that has ever occurred in the American West . This incident became known as " Massacre of 1871 "
Massacre of 1871
Chinese massacre of 1871
Chinatown, Los Angeles