An excellent comprehensive account of the trials and tribulations of the CPUSA and the many forces aligned against these radicals. Isserman does an excellent job accounting for why Communism was kept marginalized in the American working-class. The success of business associations, corporate stakeholders, and industrialists in painting Communism as inherently 'foreign' and threatening speaks volumes about the power of nativist thinking throughout the 20th century. A great account of brave people who dared to think differently and paid for it with their relationships, their careers, and in some cases, even their lives.