Normative Signs: The Poetry of "Ought"

This message is written on a garage door in Toronto.

Hard to tell if it’s a hand-written normative sign over graffiti, or the other way around. But I walk by it regularly, and I kind of love it. I believe the home-owner has written over the graffiti. But I love that the owner’s message is only barely more “official” looking than the graffiti. The net result is art.

Is this a normative palimpsest? Or a pentimento?