The Philadelphia Police Department is the police agency responsible for law enforcement and investigations within the County and City of Philadelphia, Pennsylvania. The PPD is one of the oldest municipal police agencies, fourth-largest police force and sixth-largest non-federal law enforcement agency in the United States. Since records were first kept in 1828, at least 289 PPD officers have died in the line of duty.

Francis Lazarro Rizzo was an American police officer and politician. He served as commissioner of the Philadelphia Police Department (PPD) from 1967 to 1971 and mayor of Philadelphia from 1972 to 1980. He was a member of the Democratic Party throughout the entirety of his career in public office. He switched to the Republican Party in 1986 and campaigned as a Republican for the final five years of his life.