Smile! You're on not-so-candid camera. In the wake of several controversial Denver Police Department actions, including the shooting of Ismael Mena, Denver activists took the Neighborhood Watch concept a few steps further and banded together as Denver CopWatch, a citizens' watchdog group that keeps an eye on the Denver Police Department. Founded by activists Stephen and Vicki Nash, the group has taken its cause to the streets -- including some of the town's meanest -- where members inform teens, the homeless and assorted hangers-on of their rights. Since CopWatch acquired a camera, it's started capturing cops on film, issuing quarterly reports and coming up with enough evidence that the ACLU has picked up a dozen cases documented by the citizen snoops.