What lessons can we learn from history that we can use to create a grass root movement to "reclaim the Republic"?

There are incredible obstacles to implementing any solution that will challenge the inequalities built into the US government associated with the influence of money. The people now favored by the system have every incentive to prevent any changes. At the same time, apathy, cynicism and ignorance in the general population are formidable barriers.

Historical movement dealt with many of those barriers. How did they get it done? What has to happen for the movement to get started and to grow to be an undeniable force? The occupy Wall Street lacked direction. Could this be the direction that they needed to be successful? the clear cause to get behind?