Reader “mailorders” snapped this epic pic and shares this story:

This started out as a heated confrontation when the dog ran at the guy in the t-shirt, threateningly barking.  This dog has a history of being noisy and somewhat unruly; I don't think that he's dangerous, but if somebody doesn't know dogs, they're bound to think that the dog is about to attack. His guardian, the guy with the buzz cut got mouthy and even as the guy in the t-shirt was walking away, the dog continued to follow him, barking all the time. I guess it escalated from there.

There you go people.  Don't own a dog.  Thanks mailorders!