"You bitch! Mind your own business, bitch!"
As she yelled, little balls of spit flew out of her mouth. Then, she lashed out and struck the guy, punching him in the arm.
He got up and stood near the door. She continued screaming at him, having lost all control (her son, meanwhile, submissively put his arm across her waist in a vain attempt to restrain her. It felt like he's done this before). She could not calm down. She raged and screamed, and then got up to strike him again. Two other guys and myself made moves to block her, and she eventually went back to her seat, screaming the entire time.
These kinds of incidents go to prove that appeals to reason and logic are not always a solution. There was no way to calm her down or prevent her from assaulting this guy, short of physically stopping her. Recognizing that makes me very uncomfortable.