Sen. Elizabeth Warren (D-Mass.) is going after Donald Trump as a fraud and a danger to democracy ahead of the 2016 Republican presidential primary. (AP Photo/Timothy D. Easley)

 

Elizabeth Warren called Donald Trump a “loser” who could nonetheless win the White House if voters don’t rise up to stop him.

That was the takeaway from a tweetstorm on Monday where Sen. Warren (D-Mass.) pointedly criticized the business mogul and Republican presidential front-runner.

Trump “knows he’s a loser,” Warren tweeted. “His insecurities are on parade: petty bullying, attacks on women, cheap racism, flagrant narcissism. But just because [Trump] is a loser everywhere else doesn’t mean he’ll lose this election.”

“Many of history’s worst authoritarians started out as losers – and [Trump] is a serious threat,” Warren wrote.

The tweets were the latest move in Warren’s campaign to discredit Trump ahead of the Republican convention in July. Increasingly, the Massachusetts senator is taking to social media to share her views on the Republican primary. Given her wide base of progressive support, the statements quickly go viral.

Case in point: Monday’s tweetstorm was accompanied by a longer Facebook post in which Warren called Trump a threat to virtually every component of the progressive agenda. “People have been underestimating his campaign for nearly a year – and it’s time to wake up,” she wrote. Within an hour, 29,000 people had shared the post. On Twitter, her retweets were in the thousands.

Warren is making a concerted effort to take on Trump this month. Last Monday, she used Facebook to call Trump a demagogue and a “bigger, uglier threat every day.” On Thursday, she told MSNBC she takes Trump “very seriously” and said he is promoting a “form of hate.” Over the weekend, she joked that it would make for a “perfect reality show match-up” if Trump wins the nomination and chooses former Sen. Scott Brown (R-Mass.) as his running mate: “‘Celebrity Apprentice’ meets ‘The Biggest Loser.’”

Trump is starting to fire back. “She’s got about as much Indian blood as I have,” he said of Warren in a New York Times interview, referring to a controversy about her ethnic heritage. “Her whole life was based on a fraud. She got into Harvard and all that because she said she was a minority.”

Still, Monday appears to be the first time Warren has specifically called out Trump — handle and everything — on Twitter. He hasn’t responded yet, but we’ll keep you posted.

Read Warren’s tweets here: