For those who never get the chance to speak about their lived experiences in public, protest is the only opportunity to make their voices heard.

Words of wisdom from Nelson Mandela, Maidred Maguire, John Lewis, Tim DeChristopher, Grace Lee Boggs and James Cone.

This weekend, environmental activist Tim DeChristopher on civil disobedience, and Gretchen Morgenson describes how banks are still too big to fail.

Watch the trailer for a new documentary about environmentalist Tim DeChristopher, and see a clip of his conversation with Bill Moyers, airing next week.