Rosa Parks was arrested on December 1, 1955.

This arrest occurred in Montgomery, Alabama, when she refused to give up her bus seat to a white passenger, violating the city's segregation laws. The incident sparked the Montgomery Bus Boycott, a pivotal event in the Civil Rights Movement.

She was charged with disorderly conduct, fingerprinted, and briefly held in jail before being bailed out by supporters including E.D. Nixon. Parks went to trial on December 5, 1955, and was fined $14. Note that her well-known mugshot actually stems from a later 1956 arrest related to the boycott.