kim - oh, please, do teach me more about history. 
Actually, you will find, what brings about real, long-term change is a gradual shift in social attitudes. That involves everyone. We are not living in some dystopian novel where 15 men rule over everyone else and we must change their minds one by one.
What really happens is that gradually, people come into contact with new ideas. Many of those people are oppressed. They talk, they campaign, they bring up their children and gradually, society shifts its sense of what is right. And that goes up to the people in power.
That is what works. I know stirring rhetoric seems as if it's hugely powerful, and it is - but it's the tip of the iceberg.