The Commission to Investigate Alleged Police Corruption, known as the Knapp Commission because its chairman was Walter Knapp, was appointed in 1970 under New York City Mayor John Lindsay to investigate police corruption. The committee was formed after Frank Serpico, a long-time New York City police officer and David Durk, a sergeant, revealed corrupt police practices to the New York Times. The article in the Times suggested that Lindsay knew about corruption among the police but had chosen to ignore it.
After conducting public hearings, the committee convicted several police officers of corruption and made several reforms, including placing undercover agents in each office and making commanders in the police department responsible for the behavior of their officers. The commission is important today because it cracked down on and eliminated the widespread practices of graft and corruption that used to riddle the New York Police Department. While there will always be a small number of police officers who might try to use their jobs to make illegal financial gains, the culture of graft was largely eliminated from the department.