He is certainly in violation of the Marines' regs for wear of the uniform after discharge:
APPROPRIATE WEAR OF THE UNIFORM AND MEDALS/RIBBONSI'd say that wearing half the uniform, with a goatee, while protesting on behalf of anarchists and appearing on any TV show with Kieth Olbermann qualifies as a violation of the grooming standards and prohibition on appearing at events that will bring discredit to the corps.
1. Regulations governing the wear of uniforms by active duty/retired, former Marines and civilians serving with the Corps:
Chapter 11 MCO P1020.3G, Marine Corps Uniform Regulations (Source Document)
Basic guidance (Active Duty/Reservist/Retiree and Former Marines) –
v Grooming Standards. Anyone who wears the Marine Corps Uniform must abide by the Marine Corps Grooming standards (paragraph 1004 and 8000.2 of the Uniform Regulations). Active duty/Reservists/Retirees and former Marines must also abide by the height and weight standards (paragraph 8000.2 of the Uniform Regulations).
v Wear of Proper Insignia and Awards. When wearing a Marine Corps uniform you may only wear your current rank, or the rank that you left the service with and may only wear the awards you rate per your personnel records. No deviations of this policy are authorized.
v Activities where you may not wear the Uniform. Paragraph 11002 of the Uniform Regulations provides a list of activities that you may not wear the uniform (i.e. to an event that brings discredit to the Corps, to events in support of political interests, private and/or commercial employment…).
v Retiree/Reservist Wear of Uniforms. As a Retiree/Reservist you may wear the uniform for basically any event that you wore the uniform while on active duty.
v As a former Marine there are some restrictions:
Ø You must have served during a time of war (i.e. earned the National Defense Medal during your time in service) and received an honorable discharge to wear the uniform.
Ø Events you are restricted to wearing it to:
§ Military funerals, memorial services, weddings, and inaugurals.
§ Parades on national or state holidays; or other parades or ceremonies of a patriotic character in which any active or reserve United States military unit are taking part. ‘Wearing of the uniform or any part thereof at any other time or for any purpose is prohibited.’
§ Recipients of the Medal of Honor may wear the Marine Corps uniforms at their pleasure except for those specific occasions listed in paragraph 11002 of the Uniform Regulations