Massacres History 40 Politics and government 9 Race relations 9 Crimes against 8 African Americans 7 Atrocities 7 more ... Genocide 6 Social conditions 6 Political violence 5 Violence 5 Racism 4 World War, 1939-1945 4 Ethnic conflict 3 Foreign relations 3 Holocaust, Jewish (1939-1945) 3 Reconstruction (U.S. history, 1865-1877) 3 Civic action 2 Civil-military relations 2 Contested elections 2 Death squads 2 Frontier and pioneer life 2 Government relations 2 Legal status, laws, etc 2 Relocation 2 Return migration 2 Riots 2 Sharecroppers 2 Social aspects 2 Social conflict 2 less ...