UPDATED Tuesday, Nov. 12, 2019

A scuffle between a woman and a group of right-wing demonstrators broke out on an Interstate 84 overpass in Northeast Portland on Sunday afternoon.

The demonstrators were waving flags on Northeast 12th Avenue above I-84. A person approached them and a verbal argument started, Portland Police Sgt. Kevin Allen said.

The argument then developed into a physical fight. The brawlers only had minor injuries and officers did not make any arrests after investigating participants, Allen said. But the case has been referred to the district attorney’s office for review.

“There are conflicting versions of the events, so we are gathering all of the information we can and referring it to the district attorney,” Allen said in an emailed statement.

In a livestream and other video of the incident on social media, demonstrators can be seen wearing clothing bearing the yellow Proud Boys insignia. The Proud Boys are self-described “Western chauvinists” who often express disdain for liberal politics, feminism and Islam.

In video posted to social media later Sunday night, a woman can be seen confronting the demonstrators with anti-Trump statements before the scuffle begins.

Professional MMA fighter Tara LaRosa was part of the group waving American flags and had started a livestream of the gathering just before the scuffle broke out. During the livestream, LaRosa said the group was there to show its appreciation and support of U.S. veterans for Veterans Day.

The livestream does not show how the scuffle began, but two women can be seen in a physical altercation. LaRosa can be heard telling the two to stop and “break it up.”

The livestream then goes dark, but audio is still clear, and LaRosa can be heard engaging with the woman who had been scuffling with the demonstrators. That woman identifies herself as a professor.

“You’re antagonizing the city I live in,” she can be heard telling LaRosa in the livestream.

While the live stream is dark, the woman can be heard repeatedly asking LaRosa to get off her, saying that she can’t breathe. LaRosa can be heard telling her to stop fighting and to relax.

Several other voices can be heard in the background. One man yells, “How do you like the Proud Boys now?”

After about three minutes, sirens can be heard in the background, and Portland police and a fire engine arrive.

The live stream later shows some of the fight’s aftermath, including LaRosa giving a statement to a Portland police officer.

— Emily Goodykoontz; 503-221-6652; egoodykoontz@oregonian.com