Fr. God you have to be so boring and pro-authoritarian to really be offended by buildings you don't own and will never have the power to own, being drawn on by the public. Sometimes I think graffiti is nice looking. Sometimes I think its ugly as shit. I would never begrudge someone doing it though, since I appreciate the spirit of reclaiming public spaces by the people who actually live there, who will often never be able to own spaces of their own. I am not offended for the ruling classes when their property, that they do not use, gets some paint on it. That's some crazy bootlicking behaviour.