In response to a series of bad decisions made by former NY Knicks coach Isiah Thomas in 2007, I hand-printed t-shirts allowing fans to express their disapproval. After selling 250 shirts outside of Madison Square Garden over the course of three games, I was unexpectedly arrested (link).
Daily News "Student arrested for 'Fire Isaiah' tees."
After receiving a good amount of news coverage, I created an online store through which hundreds of more shirts were sold. The charge against me was later dropped and I was awarded a (small) court settlement for the false arrest. :)
Knicks legend Walt "Clyde" Frazier signed the shirt at one point.