Labor's Giant Step: The First Twenty Years of the CIO, 1936 55 Author_V.I. Lenin Instead of the anticipated immediate Instead of the anticipated immediate slump a German revisionist who challenged the basic ideas of Marxism by counterposing his own "scientific" theories within the Social Democratic Party of Germany The rise of the CIO—the Congress of Industrial Organizations—in the early 1930s transformed the labor movement in the United States and left an indelible imprint on the subsequent course and development of the trade unions tells the story of the explosive labor struggles and political battles that built an industrial union movement and changed U