good wiki
More at Wikipedia
Romani Holocaust
The Romani Holocaust or the Romani genocide was the planned effort by Nazi Germany and its World War II allies and collaborators to commit ethnic cleansing and eventually genocide against European Roma and Sinti peoples during the Holocaust era. Under Adolf Hitler, a supplementary decree to the Nuremberg Laws was issued on 26 November 1935, classifying the Romani people (or Roma) as "enemies of the race-based state", thereby placing them in the same category as the Jews.
About