A Florida man who breached the U.S. Senate chamber carrying a Trump campaign flag was sentenced Monday to eight months behind bars, the first resolution for a felony case in the Capitol insurrection.

Paul Allard Hodgkins apologized and said he was ashamed of his actions on Jan 6. Speaking calmly from a prepared text, he described being caught up in the euphoria as he walked down Washington’s most famous avenue, then followed a crowd of hundreds into the Capitol.

“If I had any idea that the protest would escalate the way it did, I would never have ventured farther than the sidewalk of Pennsylvania Avenue,” Hodgkins told the judge. “This was a foolish decision on my part.”

Prosecutors had asked for Hodgkins to serve 18 months behind bars, saying in a recent filing that he, “like each rioter, contributed to the collective threat to democracy” by forcing lawmakers to temporarily abandon their certification.

In pronouncing the sentence, Judge Randolph Moss said that Hodgkins had played a role, if not as significant as others, in one of the worst episodes in American history.

“That was not, by any stretch of the imagination, a protest,” Moss said. “It was … an assault on democracy.” He added: “It left a stain that will remain on us … on the country for years to come.”

The sentencing could set the bar for punishments of hundreds of other defendants as they decide whether to accept plea deals or go to trial. Hodgkins and others were not indicted for roles in larger conspiracies.

Under an agreement with prosecutors, he pleaded guilty last month to one count of obstructing an official proceeding, which carries a maximum 20-year prison sentence. In exchange, prosecutors agreed to drop lesser charges, including entering a restricted building and disorderly conduct.

Assistant U.S. Attorney Mona Sedky said that, while Hodgkins didn’t engage in violence himself, he walked among many who did — in what she called “the ransacking of the People’s House.” And as he walked by smashed police barriers, he could see the smoke of tear gas and the chaos ahead of him.