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Donald Trump takes up role as 45th US president

Donald Trump has said he is honoured to be serving the "great American people", as he takes up the mantle of the 45th President of the United States.

One of his first jobs after formally taking office was to sign an executive order on Obamacare.

Later he visited the CIA headquarters in Langley, Virginia where, in a speech to CIA officers, he berated the media saying they had purposefully played down the number of people who attended his inauguration ceremony.

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Riot police clash with demonstrators in violent protests

Hundreds of armed police have clashed with protesters shortly ahead of Donald Trump's presidential inauguration.

Black-clad demonstrators smashed windows of buildings, cars and bus stops in central Washington, as well as launching dustbins and rocks - forcing police to intervene.

Swathes of officers in riot gear were seen swamping the streets in a bid to quell the unrest.

In chaotic scenes, flash bangs could be heard exploding in the background as police tried to gain control of the situation.

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