A blogger who witnessed the fight from the pro-reform side says that the finger-biter was provoked:
The man in the orange shirt hit the pro-reform guy (I'm going to call him PR Guy just to keep the players straight). Hard. ... He punched him in the face, knocked him to the ground and into that thruway. ... He got up, tried to get back up on the curb, but Orange Shirt guy was in his face. Finger in his face, PR Guy standing, steps up to the curb, and there's a scuffle. Orange shirt seemed to have PR Guy in a hold, but again, I was across the street, so won't state that as absolute fact. Next thing I see is PR Guy's hat being tossed into the street, both yelling at one another, then Orange shirt walks away, PR Guy picks up hat and crosses to our side.
When he gets to our side, he tells a story in one sentence: "He punched me hard, straight in the face, so I bit his finger off."
