Police stand in front of people who march through downtown Portland.

Police stand in front of people who march through downtown Portland.

US POLICE HAVE said that man was shot at a protest against president-elect Donald Trump last night.

The shooting happened in the city of Portland, Oregon with police saying that the man got out of his vehicle and fired multiple shots injuring the person before fleeing, likely in his vehicle.

The suspect is described as an African-American male in his late teens.

The injured man was taken to hospital for treatment of non-life-threatening injuries .

According to witnesses cited by the New York Times, the altercation began when a car full of people grew angry about being stalled in traffic and one protester was shot in the leg.

Police advising crowd on 4th Avenue this is an unlawful assembly, if you do not disperse you are subject to arrest. — Portland Police (@PortlandPolice) November 12, 2016 Source: Portland Police /Twitter

Portland has seen some of the largest protests since Trump’s election on Tuesday. On Friday, protesters hurled projectiles at officers, vandalised businesses, smashed car windows and attacked drivers. A similar demonstration on Thursday was

Last night, demonstrators took to the streets of Miami, New York, Portland and other US cities for a third straight night of nationwide protests.

In New York, the local ABC affiliate said an estimated 4,000 people gathered at Washington Square, while others descended on Union Square and marched through Midtown. Still more converged outside Trump Tower.

The New York Police Department reported that 11 people had been arrested as of late last night, the New York Times said.

Demonstrators said they wanted to show solidarity with those they felt may be targeted by Trump’s policies once he takes office in January, including Mexicans and Muslims.

Someone down on the Morrison Bridge. Heard multiple loud pops. Some saying person was shot. I haven't confirmed. Officers in riot gear here. pic.twitter.com/N8AyfrHgEi — Jim Ryan (@Jimryan015) November 12, 2016 Source: Jim Ryan /Twitter

Organisers plan another large demonstration in the same Washington Square today and more protests are expected across a number of cities over the weekend.

Meanwhile, about a thousand protesters took part in a demonstration in Miami, hoisting signs against racism as they walked down Biscayne Boulevard opposing the deportation of undocumented immigrants.

At a small protest in California, about two dozen women wearing shorts and sports bras locked arms and staged a brief flash mob-style protest in the middle of a freeway south of Los Angeles on Friday, causing traffic to come to a standstill.

- With reporting by Associated Press and © – AFP 2016