Political aspects Social aspects Mass media 20 History 10 Motion pictures 8 Politics and government 7 Philosophy 5 Imperialism 4 Social conditions 4 United States 4 Capitalism 3 Democracy 3 Economic aspects 3 Foreign relations 3 Globalization 3 Historiography 3 Mass media and culture 3 Popular culture 3 Technological innovations 3 Communication 2 Communication in politics 2 Digital media 2 English language 2 Ethnic relations 2 Gender identity 2 Influence 2 Internet 2 Iraq War, 2003-2011 2 Marginality, Social 2 Massmedia 2