the gestapo were the secret police of germany; initially created in 1933 by goering. goering's control was short, as it was soon handed over to heydrich, leader of the SD, in 1936. they used espionage to find those opposing the government, alongside mail reading and secret informants. unlike members of the SS and SD, they were plain clothed so germans couldn't tell them apart. fear was spread throughout germany through the use of morning arrests & rumours about concentration camp conditions. in reality, nazi security forces were actually quite small. however, an illusion was created to control the population.