Get breaking news alerts and special reports. The news and stories that matter, delivered weekday mornings.

Top figures in the Democratic Party pummeled Donald Trump Thursday as they publicly coalesced around Hillary Clinton for the first time in her push for the White House.

The three-pronged attack from President Barack Obama, Vice President Joe Biden, and Sen. Elizabeth Warren came on the same day the former and latter formally endorsed Clinton.

The fiercest attack came from Warren, who excoriated Trump as "a loud, nasty, thin-skinned fraud who has never risked anything for anyone and who serves no one but himself" and warned of a "full-scale assault on the integrity of the federal judiciary and its judges."

Biden also said Trump’s behavior threatens the independence of the judiciary. “It is racist,” he added.

Obama, meanwhile, said he was "worried about the Republican Party" and that running the country "is not reality TV."

Biden and Warren — the former chair of the Senate Judiciary Committee and a former Harvard Law School professor, respectively — were speaking at the American Constitution Society’s convention.

“We are losing the fight over whether our courts will remain a neutral forum,” Warren told the liberal law group. She said the American ideal is that “if you break the law, you can be held accountable, even if your name is Donald Trump. But Trump doesn’t think those rules apply to him.”

Let our news meet your inbox. The news and stories that matters, delivered weekday mornings. This site is protected by recaptcha

Just in case there was any ambiguity in how Warren sees Trump, she called him “a total disgrace” and “a thin-skinned, racist bully,” adding, “You shame yourself, and you shame this great country.”

In contrast to Warren’s energetic attacks, Biden was somber and furious, mentioning at one point that his role as vice president had constrained him.

Related: Elizabeth Warren Endorses Clinton on Rachel Maddow Show

But Biden said that Trump’s comments about the courts showed that he views the judiciary as “a tool for him to manipulate.”

“These are words, in my view, of one who would defy the courts if they ruled against him as president,” Biden said.

Appearing for the first time on "The Tonight Show," Obama told Jimmy Fallon that Democrats should not be celebrating turmoil within the Republican Party.

"What's happened in that party culminating in this current nomination, I think is not actually good for the country as a whole. It's not something Democrats should wish for," he said. "And my hope is, is that maybe once you get through this cycle, there's some corrective action and they get back to being a center right party."

Clinton's campaign was said to be in high spirits Thursday, following a day which also included a viral hit on Trump's favorite social media platform — Twitter.

Clinton's tweet, using the popular "Delete Your Account" meme, came after Trump derided Obama's endorsement of the presumptive Democratic nominee.

"Obama just endorsed Crooked Hillary. He wants four more years of Obama—but nobody else does!" Trump tweeted.

"Delete your account," Clinton responded.

Hundreds of Clinton staffers crowded around two 40-inch TV screens at her headquarters to watch Obama's endorsement video on MSNBC. Some cheered and clapped and others were teary-eyed.

"It just feels like this thing is really moving again," a top Clinton adviser told NBC News Thursday. "Today showed you're going to have a unified Democratic force."

The adviser said that Clinton, along with Obama, Biden, and Warren, would face down "a single figure and a one-trick pony" in Trump.

Clinton officials anxiously watched the populist Massachusetts senator's interview with Rachel Maddow Thursday night. Afterward, the Clinton adviser said that "Warren has emerged as a weapon of war against Donald Trump."

Moving forward, the Clinton campaign is still hedging on the vice presidential selection process — even as Warren heightened the stakes by saying she believes she's ready to be commander-in-chief. Clinton aides say the candidate still has yet to think through the process fully; in interviews Wednesday she discussed putting a rigorous process in place to select a running mate.

What's clear: The campaign team and Clinton herself are somewhat overcome by the historic nature of the achievement and elated at how the past few days have progressed.

"I don't believe she had quite processed the magnitude of all of this," the official said.