DONALD Trump, the billionaire property mogul, delivered an extraordinary rant against Barack Obama after the president's election victory.
In a series of highly personal attacks, Mr Trump criticised the president's victory as a "total sham", a "travesty" and a "disaster for democracy".
The 66-year-old reality television performer used Twitter to call for a "revolution" of the American political system, including a rally in Washington DC. He made the attacks in nine messages to almost 1.9 million followers, moments after Mr Obama was declared the election winner.
Some posts were deleted.
"Well, back to the drawing board!" he wrote. "We can't let this happen. We should march on Washington and stop this travesty. Our nation is totally divided!
"Let's fight like hell and stop this disgusting injustice! The world is laughing at us."