Abolitionism
On October 21, 1835, the Boston Female Anti-Slavery Society announced that British abolitionist George Thompson would be speaking. Pro-slavery forces posted nearly 500 notices of a $100 reward for the citizen that would first lay violent hands on him. Thompson canceled at the last minute, and William Lloyd Garrison, editor and publisher of the abolitionist newspaper The Liberator, was quickly scheduled to speak in his place. A lynch mob formed, forcing Garrison to escape through the back of the hall and hide in a carpenter's shop. The mob soon found him, putting a noose around his neck to drag him away. Several strong men, including the mayor, intervened and took him to the most secure place in Boston, the Leverett Street Jail. Phillips, watching from nearby Court Street, was a witness to the attempted lynching.
After being converted to the abolitionist cause by Garrison in 1836, Phillips stopped practicing law in order to dedicate himself to the movement. Phillips joined the American Anti-Slavery Society and frequently made speeches at its meetings. So highly regarded were Phillips' oratorical abilities that he was known as "abolition's golden trumpet".
Phillips lectured widely throughout his lifetime and for which he was paid handsomely. From his speaking engagements, he earned $10,000 to $15,000 annually; for those programs concerning abolitionist themes, he charged no fee. Phillips's cash donations to needy individuals and families was extensive. Of his estimated $150,000 income earned over 45 years, his itemized personal gifts amounted to over $65,000.
Like many of Phillips' fellow abolitionists who honored the free-produce movement, he condemned the purchase of cane sugar and clothing made of cotton, since both were produced by the labor of slaves. He was a member of the Boston Vigilance Committee, which assisted fugitive slaves in avoiding slavecatchers.
It was Phillips's contention that racial injustice was the source of all of society's ills. Like Garrison, Phillips denounced the Constitution for tolerating slavery. He disagreed with abolitionist Lysander Spooner and maintained that slavery was part of the Constitution, and more generally disputed Spooner's notion that any judge could find slavery illegal. An abolitionist pamphlet penned by Phillips outlined so compellingly that the US Constitution was a slaveholder's legal device to perpetuate slavery that it was recommended by a John C. Calhoun supporter for distribution in the South with only minor alterations.
In 1845, in an essay titled "No Union With Slaveholders", he argued that the country would be better off, and not complicit in their guilt, if it let the slave states secede:
The experience of the fifty years...shows us the slaves trebling in numbers slaveholders monopolizing the offices and dictating the policy of the Government—prostituting the strength and influence of the Nation to the support of slavery here and elsewhere—trampling on the rights of the free States, and making the courts of the country their tools. To continue this disastrous alliance longer is madness. The trial of fifty years only proves that it is impossible for free and slave States to unite on any terms, without all becoming partners in the guilt and responsible for the sin of slavery. Why prolong the experiment? Let every honest man join in the outcry of the American Anti-Slavery Society. (Quoted in Ruchames, The Abolitionists p. 196)
Phillips' alliance with the Garrisonians came with liabilities as many northerners, in both political parties, were devoted to the Union. Anti-slavery constitutionalists considered disunionism among abolitionists a threat to their cause.
On December 8, 1837, in Boston's Faneuil Hall, Phillips' leadership and oratory established his preeminence within the abolitionist movement. Bostonians gathered at Faneuil Hall to discuss Elijah P. Lovejoy's murder by a mob outside his abolitionist newspaper's office in Alton, Illinois, on November 7. Lovejoy died defending himself and his press from pro-slavery rioters who set fire to a warehouse storing his press and shot Lovejoy as he stepped outside to tip a ladder being used by the mob. His death engendered a national controversy between abolitionists and anti-abolitionists.
At Faneuil Hall, Massachusetts attorney general James T. Austin defended the pro-slavery mob, comparing their actions to 1776 patriots who fought against the British and declaring that Lovejoy "died as the fool dieth!"
The 26-year-old Phillips, infuriated by what he considered a slanderous distortion of the American Revolution, leapt to the stage and denounced Austin in a rousing extemporaneous speech that drew cheers from the audience. The episode catapulted Phillips into a leading position in the American abolitionist movement.