Police departments around the country are adding a new piece of gear to the standard uniform: A small video camera to record interactions with civilians. Bodycams can provide evidence of what actually happened during an altercation, but as The New York Times pondered this week, what happens when your arrest video lands on YouTube? Journalist Laura M. Holson leads a discussion on privacy concerns in the age of always-on video, whether it be captured on a cellphone, security camera or from chest of a police officer.