Working class History 987 Social conditions 425 Labor unions 236 Economic conditions 227 Labor movement 215 Labor 203 más ... Political activity 196 Politics and government 183 Social aspects 114 Social classes 97 Industrial relations 78 Social life and customs 73 Education 67 Poor 65 Socialism 62 Employment 57 Race relations 57 History and criticism 55 Industries 52 Women 50 African Americans 42 Economic aspects 42 Immigrants 42 Economic policy 39 Labor policy 38 Slavery 37 Communism 36 Capitalism 34 Strikes and lockouts 34 menos ...