Play video content EXCLUSIVE Emma Baum

Delta Air Lines says its crew messed up big time by not removing a pro-Trump customer from a flight after he called other passengers "Hillary Bitches."

In a video that's gone viral, a man can be seen shouting at passengers near the back of the plane, pledging his support for Trump and using derogatory terms in the process. There was outrage on social media that the airline allegedly did nothing to stop the incident.

A rep for the airline tells us, "We are sorry to our customers who experienced this disruption. We've followed up with the teams involved and all agree that this customer shouldn't have been allowed to continue on the flight."