Collective Liberty uses tech and data to help police stop human traffickinghttps://www.washingtonpost.com/lifestyle/magazine/dc-start-up-collective-liberty-uses-technology-and-data-to-help-police-stop-human-trafficking/2020/03/13/72ccf670-58c4-11ea-9b35-def5a027d470_story.html by jamessun • 6 years ago 2 0 6 years agoWAwashingtonpost.com