An Alabama law said that African Americans had to sit at the back of the bus.In 1955 in Montgomery,Alabama,Rosa Parks refused to move to the back of a bus.She was arrested.Her church organized a protest.African Americans boycotted the buses until buses were desegregated.This was the Montgomery Bus Boycott.Martin Luther King Jr. helped lead the boycott.He believed in nonviolent protest. He wanted people to fight back using peaceful actions.In 1956,the Supreme Court said that segregation on buses was illegal.