Anti-Donald Trump protesters marched through Portland, Oregon scene of most severe demonstration against US President-Elect again on Sunday night, following a gathering of anti-Trump demonstrators earlier in the evening.

Sunday night's demonstration came after police said they arrested 71 people late on Saturday and early on Sunday during protests in the city center which turned to violence.

Meanwhile US President-elect Donald Trump calls on his opponents which fill streets of US not to “be afraid,” trying to compromising his pre-election campaign plans.

Since his victory, thousands of anti-trump activists have been marching in streets across the US, dismissing the reality TV star as president.

"Don't be afraid. We are going to bring our country back. But certainly, don't be afraid," he said.

He also commented on building a wall on the border with Mexico in an attempt to stop the influx of illegal immigrants, which has been one of the central aspects of the Trump campaign, saying a fence would suffice in some areas.

"But certain areas, a wall is more appropriate. I'm very good at this, it's called construction, there could be some fencing," he said.

As the future president was taking the steps necessary to enter the White House, he also appointed a Washington insider as his chief of staff.

Reince Priebus, the head of the Republican National Committee, was appointed as Trump’s chief-of staff on Sunday.

Priebus was picked despite his hesitation to endorse the real estate mogul.

During his campaign, Trump said he was an outsider to the US politics and intended to fight the “rigged” system.

Trump gave another top job, chief strategist and senior counselor to the president, to Stephen Bannon, his campaign chairman and former head of the right-wing Breitbart News website.

Bannon (pictured above) and Priebus would be "working as equal partners to transform the federal government.”

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