The Montgomery Bus Boycott was a pivotal civil rights protest that began in 1955 when African Americans in Montgomery, Alabama, refused to ride city buses to combat racial segregation. This boycott was a response to the arrest of Rosa Parks, who defied the Jim Crow laws by refusing to give up her bus seat to a white passenger. The boycott lasted for over a year, significantly impacting the fight against racial segregation and contributing to the rise of national civil rights movements.