Rosa Parks and the Montgomery Bus Boycott

An avalanche begins with a pebble, and the "pebble" for the Civil Rights Movement was an unassuming woman named Rosa Parks. After a long day at work, she was told to move to the back of the city bus because of her skin color, but Rosa Parks refused because she was tired. Her defiance of the bus line's rules led to a boycott of public transportation system until the bus line changed their discriminatory policies.