In 1984, Richard Stallman founded a social movement known as the free software movement. The free software movement fights for the ability to control our computers as a cooperative community (as opposed to being under the rule of software proprietors where users have only as much control over their computers as the proprietor allows).
On May 1, 2008, Stallman gave a talk in Manchester, England on “Free Software in Ethics and Practice” and the newly formed Manchester Free Software group recorded this talk and released it under a license that allows sharing.
This talk is quite engaging; Stallman gets into why schools must run exclusively free software, touches on international politics, and addresses the secondary issue of why free software matters for business (secondary in importance, that is, as society shouldn’t organize around business interests).
The download links don’t seem to work.