Labor movement History 517 Labor unions 303 Working class 206 Labor 101 Politics and government 96 Political activity 89 more ... Social conditions 66 Industrial relations 47 Socialism 45 Employment 31 Strikes and lockouts 30 Economic conditions 29 Labor policy 29 Social aspects 27 International labor activities 26 Communism 22 Organizing 22 African Americans 21 Radicalism 20 Labor laws and legislation 19 Political aspects 19 Civil rights 17 Employees 17 Labor disputes 17 Economic aspects 16 Race relations 16 Ethnic relations 15 Labor leaders 15 Religious aspects 14 less ...