A militant pamphlet forced even nonviolent abolitionists to concede its truths

Evidence

Walker’s Appeal spread quickly, forcing racial commentators like Garrison to respond to its arguments. Garrison’s philosophical commitment to nonviolence caused him to deplore it as a “most injudicious publication.” But he did concede in early 1830 that the Appeal contained “many valuable truths and seasonable warnings.” — Ibram X. Kendi, Stamped from the Beginning, 442