Bruce Schneier's TEDxCambridge talk "The Battle for Power on the Internet" is a fascinating analysis of how networks have magnified, in turn, the power of individuals, then companies, then governments. Importantly, it neither dismisses the Internet as insignificant in the service of fair and free societies, nor does it presume that the Internet automatically makes the world better. Rather, it offers a prescription for using the Internet to make the world better, and to resist the use of technology to confiscate liberty.
The Battle for Power on the Internet: Bruce Schneier at TEDxCambridge 2013
(Thanks, Bruce!)