Community policing or community-oriented policing (COP) is a strategy of policing that focuses on developing relationships with community members. It is a philosophy of full-service policing that is highly personal, where an officer patrols the same area for an extended time and develops a partnership with citizens to collaboratively identify and solve problems. The goal is for police to build relationships with the community, at times through mediums such as local agencies, to reduce antisocial behavior and low-level crime. Some scholarship, such as the broken windows theory, proposes that community policing can reduce serious crimes as well. Community policing is related to problem-oriented policing and intelligence-led policing, and contrasted with reactive policing strategies which were predominant in the late 20th century. Many police forces have teams that focus specifically on community policing. Values of community policing have been linked to Sir Robert Peel's 1829 Peelian Principles, most notably John Alderson, the former Chief Constable of Devon and Cornwall Police. Peel's ideas included that the police needed to seek the cooperation of the public and prioritize crime prevention. The term "community policing" came into use in the late 20th century, and then only as a response to a preceding philosophy of police organization. In the early 20th century, the rise of automobiles, telecommunications and suburbanization impacted how the police operated. Researchers noted that police moved towards reactive strategies rather than proactive, focusing on answering emergency calls quickly and relying on motor vehicle patrols to deter crime. Some police forces such as the Chicago Police Department began rotating officers between different neighborhoods as a measure to prevent corruption and, as a result, foot patrols became rare. This changed the nature of police presence in many neighborhoods. By the 1960s, many countries including the United States attempted to repair relationships between police forces and black people.