Five years before the start of the series
The parsley massacre occurred on Haitian and Dominican border.
MASS - occur
The Holocaust took place in Europe.
India
March 5th, 1770 was the date the Boston Massacre occurred.
Yes, there have been multiple genocides after the Holocaust.
The St. Valentine's Day Massacre occurred in Chicago.
Chicago
The Munich Massacre was during the Munich Summer Olympics in September 1972
April 13th 1919
March 5, 1770