Love the idea of Ford More Weeks.
Definitely agree, get in touch with the rfmg team (although they are clear they support only peaceful protest).
From my protesting experience, some suggestions:
The dollar store is your friend. Pick up a tub of sidewalk chalk - you can write on the NPS ground but messages are more visible on the concrete walls or even better, walk up the ramp and write upside down on the walls (as I have) - these will get picked up by media. Write big.
For a few bucks, pick up foamcore or other large poster-size materials and a big marker pen from the dollar store or art store. Write SIMPLE SHORT slogans - not entire essays - in big thick letters so they get picked up by media and viewed by passers by. You'll be sainted if you bring extra posters with different messages so you have a few to hand out.
Media will pick up on the event from Twitter.
Musicians are great as well - couple of drummers - cowbells - you get the idea.
I'll be there fully equipped, depending how long our weekly Andray Domise campaign team meeting runs.