What the bleeding fuck, man?

There's a guy outside the Starbuck's I'm in right now, who is holding a sign saying "Weed is legal, discrimination is not." Every time someone enters or exits the building, he shouts "(Garbled) is not okay!" With this, I have just enough information to know that whatever the fuck he's protesting, he's a fucking asshole who needs to go away, and I'm frankly astonished that the employees of Starbuck's haven't called the cops on this fuckhead.

I keep vacillating between the desire to tell him that nobody can fucking understand what he's saying well enough to have clue one what his damned problem is, and telling him to go fuck himself.

Him: "(Garbled) is not okay!"
Me: "Yeah, well neither is standing outside a business shouting incoherent gibberish like a dogfucker for no damned good reason either, yet here you are, doing precisely that."

EDIT: My hypothesis on his issue is that he tried smoking weed in or near the building and got kicked out for it. Which, if true, is doubly stupid because Starbuck's is a no-smoking business. In fact, I don't think it's legal to smoke ANYTHING inside a public building in Portland.