Atlanta is a bustling, cosmopolitan city with an ugly past it must account for. Atlanta's Missing and Murdered: Lost Children recounts the city's horrid history with a string of child murders from 1979-1981. It's been 41 years since the first victim, Edward Smith, was murdered. He is the first of 30 victims in a spree that spans across 23 months and ravaged Atlanta's poorest neighborhoods. Wayne Williams is still in prison, but only for two murders. There are 28 others and no one to answer for them. This is why Atlanta mayor, Keisha Lance Bottoms, …