In December 1955 an African-American woman named Rosa Parks was arrested for refusal to surrender her seat to a white person on a Montgomery Alabama public bus.
The subsequent Montgomery bus boycott lasted from December 1955 to December 1956, when the federal ruling Browder v. Gayle led to a United States Supreme Court decision declaring the Alabama and Montgomery laws segregating buses were unconstitutional.
Source: Wikipedia
The story behind the story.
https://www.denverpost.com/2005/12/06/iconic-photo-of-parks-was-staged/