Jacob Chansley, the so-called "QAnon shaman," was ordered to spend more than three years in federal prison for his role in the Jan. 6 insurrection.
The 34-year-old Chansley wore a fur hat with horns and carried a spear when he stormed into the U.S. Capitol to protest Donald Trump's election loss, and Judge Royce Lamberth imposed the 41-month prison term recommended by prosecutors, reported HuffPost.
"If the defendant had been peaceful on that day, your honor, we would not be here," said assistant U.S. Attorney Kimberly Paschall.
Chansley's attorney had argued for leniency, citing his client's mental health issues, but prosecutors pointed out that he left a threatening note for then-vice president Mike Pence and attempted to stop him from certifying President Joe Biden's election win.
The Arizona man had pleaded guilty in September to one felony count of obstruction of an official proceeding.