Are you talking about the Sgt Major or the former Marine protester?
This protester was a distinctive part of the Marine Corps Uniform.
The hat can only be worn with the complete uniform. If this person is not on active duty it’s a Federal Offence and can result in 6 mo. in federal prison.
When I was Stationed at The Pentagon a discharge officer worn his uniform to a party and it cost him $500.00.
His bad luck was that a JAG officer that new him and know he was discharged was at the same party.
Now there is filmed evidence of this crime because the SGT/MAJ was able to get it on film. The Recruit Depot should have all ready filed a complaint.