From Rotten.com's daily history lesson:
Mar 1 1815: Jesse Sharpless is convicted in Pennsylvania of exhibiting a "certain lewd, wicked, scandalous, infamous and obscene painting, representing a man in an obscene, impudent and indecent posture with a woman" in his own house. It is the first obscenity trial in the United States….
Mar 1 1969: While performing with the Doors, Jim Morrison asks the audience "Do you wanna see my cock?" then exposes himself briefly on a Miami stage. For thus showing his peepee Morrison received a sentence of six months hard labor.
More tidbits here.
Rotten documents that a far more disturbing bit of obscenity happened yesterday in 1993:
Feb 28 1993: Agents of the Bureau of Alcohol, Firearms and Tobacco use armed force attempting to serve Branch Davidian leader David Koresh with a search warrant (one with no actual evidence of any illegal activity whatsoever), in what the BATF viewed as a publicity stunt to improve their image. While the agents carefully coordinated the raid with eleven different media outlets, something apparently tipped off Koresh and things do not go well: six Davidians and four ATF agents were killed. The warrant instead could have been served peacefully, while Koresh did his daily morning jog.
Reason on Waco here.
Anniversary goes "almost unnoticed" here.