There were tears, and not a small number of boos, as Bernie Sanders stood before the Democratic National Convention in Philadelphia last month to symbolically hand the party’s presidential nomination to his rival, Hillary Clinton. Days earlier, some 20,000 hacked D.N.C. e-mails had been released, revealing widespread favoritism toward the former secretary of state and sparking a minor scandal that led chairwoman Debbie Wasserman Schultz to resign. Despite the best efforts of the Democratic speakers who took the stage at the Wells Fargo Center, pro-Bernie pockets of the crowd were bitter and angry, and not afraid to voice their displeasure with the “rigged” primary system.

In the 10th episode of NomiNation, director AJ Schnack goes behind the scenes of the quadrennial Democratic gathering, where Clinton faced the immense task of unifying a party still reeling from revelations of bias. To the casual observer watching coverage of the D.N.C., Clinton’s historical nomination as the first woman to top a major party ticket was a celebrated occasion, but for Sanders supporters and “Bernie Bros” in the audience, it was far from a joyous occasion: it was the end of a movement. Here, Schnack captures that emotional moment in all its wounded, rebellious, tear-streaked glory.

Video: Donald Trump and the RNC | NomiNation, Ep. 9