William Lloyd Garrison

William Lloyd Garrison (December 10, 1805 – May 24, 1879) was a prominent American Christian, abolitionist, journalist, suffragist, and social reformer. He is best known for his widely-read anti-slavery newspaper The Liberator, which he founded in 1831 and published in Boston until slavery in the United States was abolished by Constitutional amendment in 1865. Garrison promoted "no-governmentism" and rejected the inherent validity of the American government on the basis that its engagement in war, imperialism, and slavery made the government corrupt and tyrannical; he initially opposed violence as a principle and advocated for Christian nonresistance against evil -- though at the outbreak of the civil war, he abandoned his previous principles and embraced the armed struggle and the Lincoln administration. He was one of the founders of the American Anti-Slavery Society, and promoted immediate and uncompensated, as opposed to gradual and compensated, emancipation of slaves in the United States.
https://en.wikipedia.org/wiki/William_Lloyd_Garrison