Amen to that, Sawg.
I think many activists don't really care about what they're protesting. What's that? Green beans are rascist, you say? Right, whatever. They're just out to hear their own voices. I think most are also badly in need of something to do, or are otherwise unstimulated.
I'm just not really sure what these sorts of protests are mean to do. If you really want to make a difference, do so in the ballot box, or write an editorial. Protests are so stigmatized that they have lost any impact they may have once had.
You may still get your media coverage, but I think the average person has long since ceased to care what the ravening minority's signs say today.