January 30, 1933 was the first day the Holocaust started also known as Shoah. Adolf Hitler was the leader of the Holocaust. He told everyone what to do he acted like the boss of everyone. During this time period up to 6 million Jewish people were killed. An estimated 100,000 homosexual people were arrested, and between 5,000 and 15,000 were sent to concentration camps. Romani gypsies were the second largest group killed during the holocaust. They were considered outsiders by the Nazis who were led by Adolf Hitler. Up to 1.5 million Romani gypsies were killed.