Denver officials weren't planning to reveal details about where activists would be detained in the event of mass arrests during the Democratic National Convention until after the event had started, but those plans were quickly dashed this week when CBS 4News reporter Rick Sallinger not only revealed that protesters would be locked up in a city-owned warehouse, but he also obtained clear video footage inside the facility, a building that includes barbed wire-topped cages and signs warning of stun-gun use.