Gabriel London began his work on criminal justice issues as an undergraduate at Pomona College, where he won the Albert R. Broccoli film award for a prison documentary, Turned Out. Continuing with incarceration stories, in 2001, Gabriel produced and directed No Escape: Prison Rape in America, two short films that accompanied the Human Right Watch report of the same name and that were honored with a Soros Criminal Justice Award. In 2004, Gabriel went on to produce Drew Barrymore's MTV documentary about youth voting, The Best Place to Start, and in 2008, he directed Snoop Dogg's autobiographical streets-to-prison story, Youth Authority: California for Spike TV. Gabriel's work has been included in international campaigns like Live Earth and Hopenhagen, as well as film festivals such as IDFA, Media that Matters and Urbanworld. In recent years, Gabriel has traveled extensively creating documentary based campaigns relating to disaster relief, clean energy and climate change.