A strength of the police is that they work in the community to prevent crime, keep the public safe, and to combat anti social behaviou. For example they act as a visible deterrent and can issue sanctions such as penalty notices for crimes such as shoplifting or being drunk and disorderly. They also have powers of stop and search and arrest under PACE 1984. Achieves social control as they have positive effectiveness in preventing crime, for example Essex police found 15 minutes of police patrol reduces violent crime by 70%.