A college student in Minnesota who supports President Trump waved a loaded gun at another driver in a fit of rage — sparked by the woman’s bumper sticker for Democratic presidential hopeful Elizabeth Warren, authorities said.

Joseph R. Schumacher, a 27-year-old student at Minnesota State University Moorhead, was charged Wednesday after the encounter two days earlier with an 18-year-old woman near Concordia College in Moorhead, the Star Tribune reports.

The woman told police Schumacher pulled up next to her as they drove and screamed his “dislike for the political bumper sticker” showing her support for the Massachusetts senator.

Schumacher then pointed out the Trump-Pence bumper sticker on his car while telling the woman about “his difference in national political views,” police said.

“The victim initially thought it wasn’t going to be serious,” Moorhead police Capt. Deric Swenson told the newspaper. “Then things escalated seriously.”

A few blocks later, Schumacher cut in front of the woman’s car and waved a pistol, according to a criminal complaint.

Police caught up with Schumacher, who was wearing a “Trump 2020” cap, at a Kurdish restaurant.

Schumacher insisted to investigators that he had been flirting with the woman and her female passenger, but one of the people in the student’s car admitted to police that he did pull out a gun during the encounter, which prosecutors characterized as a road rage incident, according to the Star Tribune.

A loaded handgun was found in Schumacher’s car during a subsequent search, as well as a second, unloaded firearm and a magazine. He was charged with carrying a gun without a permit and unlawful transport of firearms on Wednesday before being released, the newspaper reports.

Schumacher, of West Fargo, North Dakota, could not be reached for comment early Thursday. A message seeking comment from university officials was not immediately returned.