Trump inauguration

Mr Trump tweeted that Mr Lewis was "all talk" and should focus on his constituents, after he said Mr Trump was not a legitimate president.

But Mr Lewis' supporters reacted with anger, saying he was a hero and icon.

Mr Lewis was a leading figure in the 1960s civil rights movement.

He is the last surviving speaker from the 1963 March on Washington, led by Martin Luther King.

The row came as civil rights activists led by Rev Al Sharpton began a week of protests ahead of Mr Trump's inauguration on 20 January.

Toby Keith and Lee Greenwood, as well as Broadway singer Jennifer Holliday, will give a concert on the steps of the famed Lincoln Memorial on Thursday.

Mr Trump will also speak at the event, on the spot where Martin Luther King made his famous I Had A Dream speech to 250,000 people in 1963.

The Republican becomes the 45th president of the US next Friday.

The evening before has been called The Make America Great Again! Welcome Celebration and it will be hosted by actor Jon Voight.

Keith is one of the most famous country music singers of the last two decades.

The 89-year-old Brotman -- once the voice of the Washington Senators baseball team -- has announced every inauguration parade since Dwight D. Eisenhower in 1957.

He told WJLA he was "heartbroken" and "destroyed" by the decision at first.

"I've been doing this for 60 years," he told the Washington ABC affiliate.

George W Bush and his wife Laura have also announced plans to be there, saying they want to "witness the peaceful transfer of power".

The Manhattan business mogul will be sworn in as the 45th US president on Capitol Hill on 20 January.

Mr Trump defeated Mrs Clinton in November's election and castigated Mr Bush over the Iraq war and 9/11.

Before Tuesday's announcement, Jimmy Carter was the only former president to have said he would attend the nation's 58th inauguration.

But in this small group of performers, there's no shortage of controversy.

Last week, a member of the Mormon Tabernacle Choir -- a group who has previously performed at five presidential inaugurations -- quit, stating that the performance for Trump would betray her values.

The former UK X-Factor runner-up said she would only accept the invitation on the condition that she could perform "Strange Fruit" -- a song protesting racism in 1930s America, made famous by Billie Holiday.