There are now three permanent markers in lower downtown Denver that accurately reflect part of the city's dark past that until recently had been all but forgotten. They tell the story behind what led to the demise of Denver's Chinatown back in the late 1800s. Joie Ha is vice chair of Colorado Asian Pacific United. Roxana Soto is with the city's Office of Storytelling. They spoke with Chandra Thomas Whitfield in May.