Because the FBI was unable to discover sufficient evidence against Du Bois, but the FBI resumed its investigation in 1949, suspecting he was among a group of "Concealed Communists"
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Because the FBI was unable to discover sufficient evidence against Du Bois, but the FBI resumed its investigation in 1949, suspecting he was among a group of "Concealed Communists"
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-17 from Wikipedia. The archived copy is preserved so this citation survives link rot.