American flags burned as Donald Trump victory sparks protests across the US

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The election of Donald Trump as president has sparked protests across the United States.

In Oregon, dozens of people blocked traffic in Portland causing delays for trains on two rail lines. Media reports said the crowd grew to about 300 people, including some who sat in the middle of a road. The anti-Trump protesters burned American flags and chanted, "That's not my president."

Protesters walk in the middle of traffic lanes
Protestors blocked traffic in Portland, Oregon (Stephanie Yao Long/AP)

Meanwhile demonstrators smashed windows and set bins on fire early on Wednesday in Oakland, California. Police Officer Marco Marquez said nearly 250 protesters damaged five businesses, breaking windows and spraying graffiti, but no arrests were made.

A trash fire burns during protests in Oakland
Rubbish fires had to be put out in Oakland, California (Anda Chu/AP)

Elsewhere in California, a woman was struck by a car and badly injured when protesters got on to a main road, the California Highway Patrol said. Demonstrators vandalised the driver's SUV before officers intervened.

People protest on the University of Connecticu
Much of the vocal anti-Trump protest has come from young people, such as at the University of Connecticut pictured here (Pat Eaton-Robb/AP)

University students have been particularly vocal in their displeasure toward the election result. More than 1,000 students at Berkeley High School staged a walk-out and marched to the campus of the University of California. Police said at least 500 people swarmed streets in and around the UCLA campus, some shouting anti-Trump expletives and others chanting "Not my president!"

Students at the University of Texas at Austin protest the Trump election on campus
Students at the University of Texas in Austin protested the Trump election on campus (Deborah Cannon/AP)

Students also walked out of two high schools in Oakland as well as a school in Phoenix, Arizona. While in Pennsylvania, hundreds of University of Pittsburgh students marched through the streets after the student-run campus newspaper, the Pitt News, tweeted about an event titled "Emergency Meeting: Let's Unite to Stop President Trump."

On Twitter, the hashtag "NotMyPresident" has been used nearly half a million times.