NO HOLDS BARRED: Trump, in unprecedented fashion, airs grievances in an epic 77-minute press conference

When President Donald Trump arrived in the Oval Office on Thursday, there was something he wanted to do.

Hold a press conference.

Trump was in the midst of one of the most tumultuous weeks in presidential history. Not even one full month into his presidency, his fourth week in office was defined by high-stakes legal battles, open-air internal strife, and the resignation of the national security adviser while questions swirl about the president's ties to Russia.

The press conference was scheduled for noon at the White House. Its subject was to be the announcement of Trump's new choice to head the Labor Department after his original selection, Andrew Puzder, withdrew himself from consideration following intense criticism over past controversies and statements.

And, for its first 56 seconds, the press conference focused on exactly that: Trump's nomination of Alexander Acosta to fill his newest void.

But it was the next 76 minutes that will go down — as have many moments during Trump's time as a candidate, frontrunner, presumptive nominee, nominee, president-elect, and, now, president — as among the most surreal and unprecedented the US has witnessed in 228 years of having a president.

Trump battled with the press, attempted to downplay the growing Russia controversy, tried to defend his accomplishments from his first month in office, and said enough newsworthy statements to fill hours of cable-news programming. He said, despite the reporting that paints the opposite picture, that his administration was "a fine-tuned machine."

Reactions hit all ends of the spectrum. CNN anchor Jake Tapper described the press conference as "wild" and "unhinged." An "airing of grievances," he said. "It was Festivus." Fox News anchor Shepard Smith slammed the president for attempting to delegitimize questions about Russia.

Kurt Bardella, formerly a senior adviser and spokesman for the Republican-led House Oversight Committee, told Business Insider that the press conference made clear Trump "lives in an alternate reality."

"Anyone who wasn't questioning his mental capacity to do this job is now doing so after that unhinged press conference," he said in an email. "Forget about 'alternative facts,' President Trump lives in an alternate reality. No matter how much he insists that he doesn't listen to the media or care about what the press writes about him, clearly he does."

But Trump's supporters seemed reinvigorated by the president's Thursday actions.

Conservative radio host Joe Walsh tweeted that an 80-year-old Navy veteran called into his program and said he had "been waiting 40 years for a president to do what Trump did to the media today." Conservative author Ann Coulter, a major Trump backer, tweeted: "Trump is already head of state. After that press conference, in my eyes, he's now head of church." Conservative radio host Rush Limbaugh said it was like nothing he'd ever seen.