quakers
The Quakers were the first group to publicly criticize slavery.
The Quakers were one of the first Christian groups to speak out against slavery and actively work towards its abolition. They believed in the inherent value and equality of all individuals, regardless of race. Their efforts played a significant role in the eventual abolition of slavery in many countries.
The Mennonites were the first religious group to openly oppose slavery. Owning slaves was completely forbidden in this Christian community.
quakers
Pennsylvania Quakers.
quakers :} im pretty sure
American Anti-Slavery Group was created in 1994.
Many groups and individuals have protested against slavery throughout history. The first is likely to have been the slaves themselves. None have been successful in eradicating it.
The Quakers helped to lead the fight to end slavery. They were the first religious group to question the morality of slavery. They were instrumental in the successful operation of the 'Underground Railroad" that helped slaves escape to the northern state and then to Canada. You can read more about this interesting and egalitarian group at the related link.
Xia dynasty
The Quakers were among the first religious groups to speak out against slavery in the United States. They actively campaigned against the institution of slavery and were instrumental in the abolitionist movement.
The abolitionists were a group who fought against slavery.