"When the Monkees launched their inaugural tour in 1967, they played to throngs of screaming teenagers – and at least one FBI informant."

"'During the concert, subliminal messages were depicted on the screen which, in the opinion of [informant’s name redacted], constituted "left wing intervention of a political nature,"' reads a document in the Monkees FBI file. 'These messages and pictures were flashed of riots, in Berkley, anti-U.S. messages on the war in Vietnam, racial riots in Selma, Alabama, and similar messages which had unfavorable response[s] from the audience.'  This tiny portion of the band’s FBI file was released to the public a little over a decade ago, and now Micky Dolenz, the group’s sole surviving member, has filed a lawsuit against the FBI... hoping to see the rest of the file after failing to get his hands on it via a Freedom of Information Act request.... 'The Monkees reflected, especially in their later years with projects like [their 1968 art house movie] Head, a counterculture from what institutional authority was at the time,' [said Dolenz's lawyer.] 'And [J. Edgar] Hoover’s FBI, in the Sixties in particular, was infamous for monitoring the counterculture, whether they committed unlawful actions or not.'"

 
From "The Monkees’ Micky Dolenz Would Like a Word With the FBI/The group's last surviving member is suing the FBI after they failed to hand over band's J. Edgar Hoover-era FBI file" (Rolling Stone).