Donald Trump pledged unity and promised a change that America has not seen in decades, as he spoke in front of a crowd of thousands in Washington, DC, on his final day as president-elect.
Demonstrators set fire to a likeness of Trump late on Tuesday, smashed store front windows and set garbage and tires on fire in downtown Oakland, across the bay from San Francisco.
A few miles away, University of California, Berkeley students protested on campus.
One protester in Oakland was struck by a vehicle after blocking a highway, local media reported.