House Un-American Activities Committiee was created by Martin Dies Jr. on May 26, 1938. to investigate so called disloyalty and subversive activities by citizens and those organizations suspected of having links with communism.
Also, it was necessary to show that the involvement of communists in disorder in the demonstrations of African Americans in the fight against racism will not be tolerated.
Afro Americans have long been the target of the Communists, and through struggle of black people they have seen a chance to interfer and carry out their Communist ideas.
Right answer is C. because the joined the communist
