As a part of their job, police officers have rights that other people do not have. This might include the power to arrest a person who they think has committed a crime, the power to search a person, the power to stop cars and direct traffic, the power to ask for a person's name and address, the power to give out tickets or fines or the power to make a person come to court. Without these powers the police would not be able to gain any sort of control over society. 