Check out what's being censored:
Fire in My Belly
The above video was banned from display at the National Portrait Gallery and Museum of Modern American Art.
However a private gallery has decided to show the piece instead: http://www.washingtoncitypaper.com/blogs/artsdesk/general/2010/12/01/transformer-steps-up/
Also, the artist, David Wojnarowicz, was censored on WORLD AIDS DAY when he himself died of AIDS.