Truly, I find graffiti interesting and a great expression. However that is just the style, I find the act of vandalism offensive. If you want to express yourself, by a canvas or billboard or rent space on the side of a wall of someone’s property and do it there. I do not go to your house (mr. graffiti artist,) and demonstrate my shitty art skills, and I do not desire you to come to my office/work/place of business and demonstrate your excellent art skills.