Don Casimere worked for more than 25 years in civilian oversight. He started as a Berkeley police officer in 1972, and worked for 12 years at the Berkeley Police Department, first as an officer and then as a sergeant. Don worked as a senior investigator for the San Francisco Office of Citizen Complaints; as an investigative and appeals officer for the Richmond Police Commission; and as the Director of the Office of Public Safety Accountability in Sacramento. He also assisted in the startup of these three agencies. Don was a past president and founding member of the International Association for Civilian Oversight of Law Enforcement (IACOLE). He was also a founding member of NACOLE.