I hate being that cringe guy in the comments posting FD quotes, but this one is such a banger
Power concedes nothing without a demand. It never did and it never will. Find out just what any people will quietly submit to and you have found out the exact measure of injustice and wrong which will be imposed upon them, and these will continue till they are resisted with either words or blows, or with both. The limits of tyrants are prescribed by the endurance of those whom they oppress
Frederick Douglass was born into slavery 1818, in Maryland. He escaped at age twenty, and went on to became a prolific author, public speaker, and political activist, in the fight to abolish slavery.
In the USA, humans were enslaved. Abolitionists, such as Frederick Douglass, resisted the practice of slavery. There are many important abolitionist figures. I'm fond of John Brown.