Just as the leader of the Reform party was shaking his fist to acknowledge applause from onlookers below, something struck the side of the car.
When Mr. Farage saw the thing rushing in, he raised his arm, but it missed him.
The man was then captured on camera throwing something else out of a bin on a building site before being dragged off by people with high-viz vests.
He fled, but the cops caught up with him.
Mr. Farage stated that he thought a coffee cup and wet cement were aiming for him.
He posted on X, saying, “My huge thanks to South Yorkshire Police today.”
“I will not be bullied or cowed by a violent left-wing mob who hate our country.”
Police detained a 28-year-old man on suspicion of disturbing the peace; they believe the man threw objects from a “nearby construction area.”
The event occurred after last week in Clacton, Essex, the constituency that Mr. Farage will be running for in the election, a woman flung a milkshake over him.
Mr. Farage decided not to run for office and took the helm of Reform.