History 66 Politics and government 23 Presidents 23 African Americans 13 Assassination 7 Civil rights movements 7 Social conditions 7 more ... Civil rights 6 Indians of North America 6 African American civil rights workers 5 Race relations 5 Civil rights workers 4 Discovery and exploration 4 Election 4 Emigration and immigration 4 Influence 4 Presidential candidates 4 Social life and customs 4 Vietnam War, 1961-1975 4 African American soldiers 3 Campaigns 3 Foreign relations 3 Fugitive slaves 3 Race discrimination 3 Slavery 3 Spanish-American War, 1898 3 Underground Railroad 3 African American women 2 Antiquities 2 Armed Forces 2 less ...