There was never anything that said they couldn't speak against slavery in public.
It would make men angry.
Answer this question… It would make men angry.
Quakers were among the first in England to speak out AGAINST slavery.
Slavery
Catharine Beecher believed that speaking out against slavery in public would lead to social and political consequences for women, ultimately hindering their ability to fulfill their domestic duties and jeopardizing their role as moral leaders in the home.
The first known individual to speak out against slavery was St. Augustine, a theologian from the early Christian Church who argued that slavery was a result of sin and was not part of God's original plan for humanity.
slavery
The first trip Frederick Douglass took to Britain to speak out against slavery was in 1845. He remained in Britain for about a year and a half.
Yes, Sojourner Truth did travel the country to speak against slavery. (I know because I need to know this for a History paper)
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.
Slavery
Sojourner Truth