William Monroe Trotter (1872- 1934), though still virtually unknown to the wider public, was an unlikely American hero. With the stylistic verve of a newspaperman and the unwavering fearlessness of an emancipator, he galvanized black working- class citizens to wield their political power despite the violent racism of post- Reconstruction America. For more than thirty years, the Harvard-educated Trotter edited and published the Guardian, a weekly...