FWIW and make your own decision.
I did a little digging today, trying to find out who is running this "nationwide protest at our state's capitols". They are a group called "2nd Right" that has a web forum and a Facebook page with about 15k followers since sometime in 2012.
I exchanged a few messages with someone named "Mike" at 2nd Right and finally got the name of the person who is "running" the Boston protest.
So, I messaged him.
His name is Nizzie Bean on Facebook.
He has also been involved with Occupy protests, "End the Fed" protests, Legalize Pot protests and has lots of photos on his page showing his involvement.
He/they have no plan for the day, nobody running point, and no organization.
Also, I asked numerous times "who is 2nd Right" and was never answered.
It looks as if this is an "Occupy Boston" group disguised as, or getting involved in 2A rights.
Found it kind of interesting.