The Montgomery Bus Boycott began after Rosa Parks' arrest on December 1, 1955, for refusing to give up her seat to a white passenger in Montgomery, Alabama. Sparked by her act of civil disobedience, African Americans, led by figures like Martin Luther King Jr., organized a boycott of the city’s segregated bus system, which lasted for over a year. The boycott successfully led to a Supreme Court decision declaring segregated buses unconstitutional. It not only highlighted the injustice of racial segregation but also strengthened the Civil Rights Movement, inspiring further activism and change across the United States.