You might think Starbucks is a ‘progressive’ company. You’d be wrong 
Starbucks carefully cultivates a let's-be-kind-to-each-other image
while treating employees like dirt and punishing 
them illegally for
organizing.
I too stopped by the strike site at 874 Comm Ave, Boston, and I found out
how the workers have been able to keep the picket going 24/7 for months:
it's not just the workers!  Volunteers from the community help out.
I wish I could post a link to more information, but that site won't
show anything unless the visitor runs nonfree JavaScript code, and I
will not direct people to such a site.  Is there a web developer who
would be interested in setting up a freedom-respecting site to show
the same information?  The strikers might be happy to adopt that site
if some developers set it up.