Demonstrations Parades & processions 4 Strikes 4 World War, 1939-1945 3 Communists 2 Pickets 2 Political parades & rallies 2 more ... Socialism 2 Arbitration, Industrial 1 Balls (Parties) 1 Beer 1 Boat & ship industry 1 Business panics 1 Camps 1 Canteens (Wartime, emergency, etc.) 1 Caricatures and cartoons 1 Children & adults 1 Children playing 1 Cinematography 1 Clubs 1 Coal 1 Coal miners 1 Communism 1 Conscientious objectors 1 Crowds 1 Day care 1 Draft 1 Eating & drinking 1 German Americans 1 Gymnastics 1 International relations 1 Labor unions 1 Law enforcement 1 May Day (Labor holiday) 1 Military facilities 1 Militias 1 Miners' unions 1 Moral & ethical aspects 1 National socialism 1 Organizations 1 less ...