Good idea.
Maybe other dim bulb pit bull owners will get the message.
Dog lovers are generally totally blind to anything that their animals do that annoy or injure other people. My idiot cousin (some 10 - 12 years ago) had a rescue dog that she had out (without a leash) that bit a jogger. Her response when discussed in family setting? "It only bit him once, and what business did he have jogging down the street where I walk my dog anyway." She was totally serious. In her eyes it was the fault of the jogger. Fortunately for her the guy didn't sue her. I would have.
Kind of unfair to expect these folks of limited economic capacity to do all that "accomplishment" stuff that non-danger-dog owners do.