On July 18, 1993, Rage Against the Machine hit the stage in Philly during Lollapalooza ’93, and instead of playing music, the four band members, vocalist Zack de la Rocha, guitarist Tom Morello, bassist Tim Commerford, and drummer Brad Wilk, stood on stage naked with duct tape over their mouths and the letters “PMRC” painted on their chests in a protest against censorship. The PMRC worked with the RIAA to create this now-familiar Parental Advisory logo in black and white. To some, it has become known as the “Tipper sticker” because of Tipper Gore’s visible role in the PMRC.
For 15 minutes, the only sounds heard during the demonstration were guitar feedback and jeers from pissed-off fans who actually wanted to see the band play something. In a bit of irony, below you will find the (CENSORED) version.