Political aspects History 22 Social aspects 18 Politics and government 13 Race relations 10 Mass media 9 Social media 9 more ... Petroleum industry and trade 8 Water-supply 8 Internet 7 African Americans 6 Journalism 6 Government policy 5 Influence 5 Social conditions 5 Democracy 4 Economic aspects 4 Leaks (Disclosure of information) 4 Music 4 Petroleum 4 Racism 4 Water resources development 4 World War, 1939-1945 4 Art 3 Artists 3 Dams 3 Documentary films 3 Education 3 Environmental aspects 3 Foreign public opinion, American 3 less ...