In 1985, Al Gore’s wife Tipper began a crusade against what she deemed to be “obscene” music. Allegedly, this began when she bought her 8-year-old daughter a copy of Prince’s Purple Rain.

The album, Prince's first No. 1 ... "Darling Nikki" was considered risqué and is one song that sparked Tipper Gore and the Parents Music Resource Center's implementation of the Parental Advisory ...