"Defacing" means to damage, vandalize, or spoil the appearance of something by writing, drawing, or altering it in a way that is unauthorized or undesirable. Full definition
Goode's work evolved over the ensuing years to include expansive painted views of the sky, which he then defaced by tearing away or gouging substantial portions of the image. (kohngallery.com)
My grandson, growing up in the country, was deprived of the thrill of defacing property. (theletteredcottage.net)