 The Montgomery Bus Boycott was not a spontaneous event; various organizations in Montgomery — including the NAACP, MIA, and Women’s political council (WPC) — had been waiting for the right moment to begin protest.After several women, including the plaintiffs of Browder v. Gayle, refused to give up their seats on the bus, the spark for the boycott was ignited when Rosa Parks was arrested.The boycott, primarily led by Jo Ann Gibson Robinson, began on December 3, 1955, two days after Rosa Parks' arrest.