Labor unions History 39 Political activity 11 Politics and government 11 Strikes and lockouts 10 Labor leaders 9 Labor movement 9 more ... Labor union members 8 Social conditions 7 Working class 7 Officials and employees 6 African American labor union members 5 Employment 5 African Americans 4 Civil rights movements 4 Civil rights workers 4 Employees 4 Foreign workers 4 Histoire 4 Industrial relations 4 Nonviolence 4 Social movements 4 Syndicats 4 Coal miners 3 Discrimination in employment 3 Economic conditions 3 Economic policy 3 Homestead Strike, Homestead, Pa., 1892 3 Iron and steel workers 3 Metal-workers 3 less ...