The Kingsmen's rendition of "Louie, Louie" has been an iconic song since its debut in the 1960s. BUT when rumors surfaced about potentially obscene lyrics surfaced, the FBI was called in to investigate.

Sources
Hillary's Story
FBI
Louie Louie (The Song)

History
The FBI Laboratory weighs in on the “dirty” lyrics of “Louie Louie”

Indy Star
That time Indiana teens ratted out dirty ‘Louie Louie’ lyrics, and the FBI got involved--Will Higgins

The Legal Satyricon
The Raunchy Version of Louie Louie — Lyrics Are Public Domain?

Loudersound
What happened when the FBI tried to decipher The Kingsmen's Louie Louie--by Bill DeMain

Medium
About Those Banned “Louie Louie” Lyrics--by Neal Umphred

The New Yorker
Is This the Dirtiest Song of the Sixties?--by Anwen Crawford

NPR
How the universally recognized song "Louie Louie" by the Kingsmen came to be--by Deena Prichep on Weekend Edition Sunday
'Louie Louie': The story behind the song everyone knows but no one understands--by Deena Prichep

Wikipedia
The Kingsman
Louie Louie

Photos
Richard Berry--from Richard Berry Estate via KCRW's X post
The Kingsmen--from Scandore/Shayne via Wikipedia (Public Domain)
Louie Louie Lyrics--via Techdirt
FBI Report--from Mental Floss via Medium

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