On December, 1, 1955 in Montgomery, Alabama, Rosa Parks refused to give up her seat on a city bus to a white man. She was arrested for disorderly conduct. This lead to the Montgomery Bus Boycott which lasted over a year until the Supreme Court found segregated public transportation to be unconstitutional and ordered Montgomery officials to integrate the service.
Many historians note December 1, 1955, as the beginning of the modern civil rights movement in the U.S.
From 1965 until her retirement, Rosa Parks worked for U.S. Representative John Conyers of Michigan. In 1999 she was awarded the Congressional Gold Medal of Honor.