http://www.filmsforaction.org/

Films For Action is a community-powered alternative news center and learning library for people who want to change the world. 
Tim Hjersted (Project Director; Lawrence, KS) states, "Films For Action uses the power of film to raise awareness of important social, environmental, and media-related issues not covered by the mainstream news. Our goal is to provide citizens with the information and perspectives essential to creating a more just, sustainable, and democratic society." 
The website has cataloged over 900 of the best films and videos that can be watched free online:  http://kc.filmsforaction.org/