Crossword clue: united states bass singer and an outspoken critic of racism and proponent of socialism (1898-1976)

The most common answer is robeson (7 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

robeson 7 letters wn-def

United States bass singer and an outspoken critic of racism and proponent of socialism (1898-1976)