The conclusions, as Sanders noted, were devastating. “The shockingly dangerous working conditions at Amazon’s warehouses revealed in this 160-page report are beyond unacceptable,” said Sanders.

Amazon said it had cooperated with the probe despite Sanders’ “pre-conceived narrative ... moving at all costs,” referring to conveyor belts in facilities, even if workers passed out.

Amazon is facing an investigation by the US Congress over its warehouse safety practices, adding to pressure it faces over its treatment of workers. Senator Bernie Sanders announced the probe ...