History of U.S. Labor Unions.   The 1929 to 1939 Great Depression destroyed the U.S. Labor Unions due to Massive Unemployment, and the U.S. Economy Collapsed.   This became Global, with any Nations connected to the U.S. Dollar, and or U.S. Economy.
U.S. Italian Organized Crime Families got the U.S. Labor Unions for Cheap, as Legit Businesses with "Political Clout", as Sympathizers to Italy's Dictator Mussolini, and his Ally Chancellor Hitler of Germany, the U.S. Italian Organized Crime Families, Reorganized the U.S. Labor Unions using the Models of the Italian Fascist Party, and Chancellor Hitler's National Socialist German Worker's Party a Political Labor Union Party.
From the 1930s to 1945 Democrat President FDR was a U.S. "Labor Union Buster" to prevent the spread of Italian Organized Crime that Owned all The U.S. Labor Unions.   1930s to 1945 He prevented the U.S. Labor Unions from getting into his created Labor Intensive U.S. Military Defense Industrial Complex.
 continued.