Rapp, 29, was a student at Michigan State University in 2008 when a parking officer ticked his vehicle. Rapp proceeded to vent his frustrations by yelling at the officer who administered his ticket. He must've been quite intimidating – according to a Detroit Free Press report, the officer "retreated to his vehicle, called for help, then sat in his vehicle until police arrived."
Apparently, the tirade that followed resulted in charges against Rapp, which triggered a court case that went all the way to the Michigan Supreme Court. The state court has ruled that Rapp cannot be charged with a crime for such an act. Rapp was to be prosecuted under an MSU ordinance regarding "anyone who disrupts in any way anyone carrying out any activity for or with MSU."
That sounded a bit vague to Rapp's attorneys, and it apparently did to the court, as well. In a divided decision, they have ruled that prosecuting Rapp would infringe upon his right to free speech.