CAMPAIGNER and politician John Lewis, whose bloody beating by Alabama state troopers in 1965 helped galvanise opposition to racial segregation, has died at the age of 80.

US House Speaker Nancy Pelosi confirmed Lewis's passing late last night, calling the veteran politician "one of the greatest heroes of American history".

Lewis received tributes from Democrats and Republicans when he announced in December that he had been diagnosed with advanced pancreatic cancer.

He was the youngest and last survivor of the Big Six civil rights activists, a group led by Martin Luther King Jr that had the greatest impact on the movement.

He was best known for leading some 600 protesters in the Bloody Sunday march across the Edmund Pettus Bridge in Selma.

At age 25 - walking at the head of the march with his hands tucked in the pockets of his tan overcoat - Mr Lewis was knocked to the ground and beaten by police.
His skull was fractured, and nationally televised images of the brutality forced the country's attention on racial oppression in the South.

Within days, Reverend King led more marches in the state, and President Lyndon Johnson soon was pressing Congress to pass the Voting Rights Act.

The bill became law later that year, removing barriers that had barred black people from voting.

Lewis turned to politics in 1981, when he was elected to the Atlanta City Council.

He won his seat in Congress in 1986 and spent much of his career in the minority.

After Democrats won control of the House in 2006, Lewis became his party's senior deputy whip, a behind-the-scenes leadership post in which he helped keep the party unified. 

Lewis said he had been arrested 40 times in the 1960s, five more as a congressman.

At 78, he told a rally he would do it again to help reunite immigrant families separated by the Trump government.

Lewis's wife of four decades, Lillian Miles, died in 2012. They had one son, John Miles Lewis.