How was Malcolm X's life affected by U.S. government surveillance?

Malcolm X was under constant surveillance by numerous agencies including the FBI, CIA, State Department, U.S. Information Services, Mississippi Sovereignty Committee, and the New York Police Department's Bureau of Special Services. There is clear evidence that law enforcement had undercover agents who infiltrated Malcolm's organizations (Organization of Afro American Unity and Muslim Mosque Incorporated), both as members and meeting attendees. These intelligence agencies at domestic and global levels were intent on silencing Malcolm X. During escalating tensions with the Nation of Islam, which increased violent rhetoric against him, these agencies monitored but did not intervene before his assassination.