'We will never give up, we will never concede' -Trump
Trump, who has spent much of his time since the election in a failed effort to reverse his defeat, falsely said he won the November 3rd contest as he spoke on an outdoor stage framing the White House, which Biden is due to take over in two weeks.
Crowds gathered at the "Save America March" wore Trump-approved red baseball caps and cheered as Trump repeated the groundless conspiracy theories that have consumed his final days in office.
"You don't concede when there's theft involved," Trump said after taking the stage. "Our country has had enough and we will not take it any more."
He ramped up pressure on Vice President Mike Pence to block congressional certification of the November election results on Wednesday, saying, "If Mike Pence does the right thing, we win the election."
He aired his familiar grievances with the news media and Hillary Clinton, his former Democratic rival from the 2016 election, and delighted the crowd by calling Democratic victories the product of what he called "explosions of bullshit.""
"Bullshit! Bullshit! Bullshit!" the crowd chanted in reply.
Weeks have passed since the states completed certifying that Biden, a Democrat, won the election by 306 Electoral College votes to Trump's 232, and Trump's extraordinary challenges to Biden's victory have floundered in courts across the country.
Congress was due to confirm Biden's victory on Wednesday. Many of Trump's fellow Republicans have promised a stonewalling effort that could stretch proceedings past midnight but was almost certain to fail.
