African Americans History Race relations Black people Civil rights Segregation Enslaved persons African American athletes African American women Law and legislation Slavery African American abolitionists African American authors African American musicians African American scientists Discrimination in sports Emancipation Harlem Renaissance Oratory Participation, African American Politics and government African American arts African American civil rights workers African American entertainers African American inventors African American social reformers African American women athletes Antislavery movements Boston Massacre, 1770 Discrimination in education