In 1963, a rock group named the Kingsmen recorded the song “Louie, Louie.” The popularity of the song and difficulty in discerning the lyrics led some people to suspect the song was obscene. The FBI was asked to investigate whether or not those involved with the song violated laws against the interstate transportation of obscene material. The limited investigation lasted from February to May 1964 and discovered no evidence of obscenity.
Your tax dollar$ at work. Sort of.
Eideard 
Among other things “Louie Louie” has been recognized by organizations and publications worldwide for its influence on the history of rock and roll. https://en.wikipedia.org/wiki/Louie_Louie#Lyrics_investigation
See also “Under the influence of rock’n’roll” https://blog.oup.com/2015/04/rock-and-roll-history/