David Kaplan of California's Center for Investigative Reporting called COINTELPRO "the largest known program yet in domestic suverillance."
Kaplan observed that "between 1965 and 1975, the FBI opened more than 500,000 intelligence files on more than one million Americans, according to a Congressional report."
"Among the Bureau's targets: Martin Luther King and the civil rights movement, anti-Vietnam War Groups, and the underground press."