by ProPublica and PBS's Frontline

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This story is part of a collaborative investigation from ProPublica and FRONTLINE that includes an upcoming documentary, “The Rise and Fall of Terrorgram,” which premieres March 25 at 10 p.m. EDT/9 p.m. CDT on PBS stations (check local listings) and will be available to stream on YouTube, the PBS App and FRONTLINE’s website.

A new investigative collaboration from FRONTLINE and ProPublica explores a........

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