Beginning in 1933, all German Romani were barred from living in cities, herded into settlement camps, and routinely sterilized. Romani men were required to wear a brown Gypsy ID triangle sewn on their chest, similar to the pink triangle that homosexuals wore, and much like the yellow Star of David that Jews had to subsequently wear. During the war, Romani were systematically killed in concentration camps. In France, they were used as slave labour on farms and in factories. During the Holocaust an estimated 600,000 to 1.5 million Romani throughout Europe were eventually killed.