"It's not too late for someone else's child'

After Prince George's County officials briefly closed the CFE Event Center in Forestville and eight other nightclubs accused of being havens for violence in 2007, the number of homicides at the Forestville club annually declined, from three homicides in 2006 to an average of one a year since 2007.

But that is one too many for Tracy Cooper, whose son was killed there two weeks ago. Cooper, 43, a Washington, D.C., resident, said she is on a mission to shutter CFE for good.

"It's too late for my child, but it's not too late for someone else's child," Cooper said. "We've got to do something about it."