He described the protest as turning violent, with ICE agents reportedly firing pepper bullets into the crowd and assaulting demonstrators, including a musician.
Klepper characterised the violence he witnessed as 'performative' and 'reckless', expressing disgust at the actions of American servicemen against peaceful protesters.
The documentary's release follows Trump’s campaign to win a Nobel Peace Prize, which the White House defended by citing his 'Peace through Strength' foreign policy.