Answer: Well...I think this will help.
Slavery was common when Hazrat Muhammad (SAW) started preaching Islam. As Islam teaches equality of all human beings, the early converters to Islam were mostly the slaves and the poor. Islam does not like slavery.
But it was not possible in that society to announce it Haram. However, the Holy Prophet (SAW) commanded the Muslims to treat the slaves kindly, give them the same food which the master eats, don't be cruel to them, preferably set them free. Hazrat Zaid (rau) was a slave set free by Hazrat Muhammad (SAW). Hazrat Bilal (RAU) was also a slave bought and set free by Hazrat Abu Bakr (RAU). Both of them enjoyed more respect than many of the other Companions (RAU).
Explanation:
César Chavez, fought for farm laborers' rights, and worked really hard to improve work conditions for many farm workers.
He was inspired by methods previously used by Mahatma Gandhi, such as strikes, boycotts, fasts and marches, using them to draw attention to his cause. Furthermore, he never answered with full on violence, but he responded with passive resistance, just like Gandhi did.
César Chávez transformed conditions and pay for many labor workers, making him a champion of the poor.
Betty friedan developed a critique of womens role as a "domestic goddes" in the feminine mystique
