Warhol didn't invent the Campbell's Soup can, he just made it art (and pissed off a lot of people in the process). Likewise, the person who added a teardrop to this Goya gave visitors something to chew on while popping a squat. What does the tear signify? Is it gang related? How much irony should we read into it? So much depends on how drunk the hand was the defaced the child.