What was the role of the gestapo during world war 2?

Basically, the Gestapo's (the green Police) role was to question the movements of the citizens in Germany. THey kept everyone under suspicion. If citizens did not respond to them, torture was used. The Gestapo had the right to iterogate citizens at any given time. Night or day. It didnt matter to them. They were highly fearded, and were not to be tolied with. The were Germanys top Police force. They had no limitations, and had no consequence to there actions.