In the name of protecting Americans from Soviet espionage, the post-1945 Red Scare curtailed the reform agenda of the New Deal. The crisis of the Great Depression had brought into government a group of policy experts who argued that saving democracy required attacking economic and social inequalities. The influence of these men and women within the Franklin D. Roosevelt administration, and their alliances with progressive social movements, elicited a powerful reaction from conservatives, who accused them of being subversives. Landon Storrs draws on newly declassified records of the federal...