Was George Carlin a public enemy?

Not in the sense of Chuck D & Flavor Flav, no, but ... Well, check this out:

"Among the 12 pages in a file recently released by Carlin's family are a couple of letters from outraged citizens who complained that the comedian had made fun of the FBI and its director, J. Edgar Hoover, during TV appearances in 1969 and 1970." [more]