The “caveman” son of a New York City judge pleaded guilty Wednesday to storming the US Capitol during the riot last year.
Aaron Mostofsky, 35, was one of the most memorable rioters who broke into the Capitol, sporting a stolen bulletproof vest, fur pelts, a walking stick and carrying a stolen riot shield.
Mostofsky is the son of Shlomo Mostofsky, a Brooklyn Supreme Court judge and a prominent figure in the Orthodox Jewish community.
Now he is staring down 12 to 18 months in federal prison after copping to civil disorder, theft of government property and entering and remaining in a restricted building or grounds charges. He will be sentenced on May 6.
Mostofsky spoke to The Post while in the Capitol that day, explaining he joined the insurrection “to express my opinion as a free American that this election was stolen.”
“We were cheated,” he said. “I don’t think 75 million people voted for Trump — I think it was close to 85 million. I think certain states that have been red for a long time turned blue and were stolen, like New York.”
He said at the time that Congress members shouldn’t fear protesters like him.
“[They] shouldn’t be afraid; they should get the courage to do their duty to examine the fraud and maybe delay the election,” he said, also criticizing COVID-19 restrictions in the conversation.
Shlomo Mostofsky, a prominent Brooklyn judge, has said little of his son’s actions and get-up, which became a meme on the internet. In messages revealed as part of the investigation, the younger Mostofsky had told someone meeting him at the riot he would be dressed as a “caveman.”
“Even a caveman knows it was stolen,” he wrote, according to prosecutors.

The FBI has previously said the stolen bulletproof vest was worth almost $2,000 and the riot shield was worth $256. Mostofsky told The Post he found the shield on the floor.
The wannabe revolutionary was arrested on Jan. 12, 2021, when the FBI raided his brother’s house, where agents were seen carting away the outfit he wore the day of the insurrection.
Mostofsky is one of more than 730 people who have been charged with federal crimes for their role in the riot, and one of more than 200 who have pleaded guilty. Most rioters were facing misdemeanors, but the judge’s heir is in a special group of around 25 who pleaded guilty to felony charges.

With Post wires