Paperback Software, a company founded by Adam Osborne, was found guilty of copyright infringement for using Lotus 1-2-3's look-and-feel interface in its own spreadsheet program.
President Slobodan Milošević gave a speech at Gazimestan in which he described the possibility of "armed battles" in the future of Serbia's national development.
In Regents of the University of California v. Bakke, the U.S. Supreme Court barred quota systems in college admissions but held that affirmative-action programs advantaging minorities were constitutional.
In response to a police raid at the Stonewall Inn in New York City, groups of gay and transgender people began demonstrations, a watershed event for the worldwide gay rights movement.
Polish workers demanding better working conditions began massive protests in Poznań, but were later violently repressed by the Polish People's Army and the Internal Security Corps.