Internet cameras have been around longer than the world wide web. We installed one of the planet’s first public webcams way back during the Clinton administration. It showed the Houston skyline as a hurricane swept through the city. Not many people watched it, largely because there weren’t that many people who had computers capable of streaming internet video back then. Things have changed, and now you can use your telephone to watch a live stream of people looting an Apple Store on the other side of the planet while you ponder the future of democracy in your bathrobe. Ain’t...