All of the passengers were forced to deplane, and Shanghai law enforcement was called in to deal with the matter. However, the man finally decided to leave "on his own accord," according to the airline.
As he was escorted off the plane, the crowd jeered the man in Chinese and English and chanted "lock him up," a riff on the cries of "lock her up!" about Hillary Clinton at Trump campaign events.
The man, in turn, called one passenger "Hillary" and "lesbian."
The flight left Shanghai more than three hours late and had to make an unscheduled stop in San Francisco to switch crews before heading back to New Jersey.
"MAGA" passenger causes incident on @united flight at Shanghai Pudong. Details at https://t.co/s6uyjctjpI #united #united87 pic.twitter.com/hhyL7e63W9
— Clark Gredona (@clark_gredona) 21 мая 2017 г.
United thanked its customers for their patience and its staff for its professionalism throughout the ordeal.