The case (Tagami v. City of Chicago) stems from the 2014 ticketing of Sonoko Tagami, who took to the Chicago streets with only opaque body paint over her bare breasts to celebrate "GoTopless Day" that year. Tagami was issued a $100 citation for violating the city's ban on public indecency, which prohibits the public display of female breasts and of all bare butts and genitals. After losing her challenge to the citation, Tagami filed a lawsuit with the U.S. District Court for the Northern District of Illinois.