What two major incidents happened in 1955 to bring national attention to racial bigotry of southern whites?

The American Civil Rights Movement (1955-1968) was a biblically based movement that had significant social and political consequences for the United States. Black clergymen such as the Reverends Martin Luther King, Jr., Ralph Abernathy, Joseph Lowery, Wyatt T. Walker, Fred Shuttles worth, and numerous others relied on religious faith strategically applied to solve America's obstinate racial problems.