Radicalism History 300 Politics and government 171 Terrorism 77 Political aspects 67 Religious aspects 55 Social movements 55 more ... Political activity 52 Social conditions 43 Right-wing extremists 41 Right and left (Political science) 34 Intellectual life 33 Social aspects 33 Political violence 30 Democracy 29 Race relations 29 Socialism 29 Islam 28 Prevention 28 African Americans 27 History and criticism 26 Feminism 23 Philosophy 23 Protest movements 23 Communism 20 Radicalism in literature 19 Working class 19 Politics and literature 17 Islamic fundamentalism 16 Political and social views 16 less ...