Brown v. Louisiana, 383 U.S. 131 (1966), was a United States Supreme Court case based on the First Amendment in the U.S. Constitution. It held that protesters have a First and Fourteenth Amendment right to engage in a peaceful sit-in at a public library. Justice Fortas wrote the plurality opinion and was joined by Justice Douglas and Justice Warren. Justices Brennan and Byron White concurred. Justices Black, Clark, Harlan and Stewart dissented.