The program was successfully kept secret until 1971 , when the Citizens ' Commission to Investigate the FBI burgled an FBI field office in Media , Pennsylvania , took several dossiers .
The program was successfully exposed the program by passing this material to news agencies .
The program was successfully kept secret until 1971 , when the Citizens ' Commission to Investigate the FBI burgled an FBI field office in Media , Pennsylvania , took several dossiers , and exposed the program by passing this material to news agencies .