If it's purpose is to entartain or to show you're passion, and creativity then it is an art in a form of vandalism..(di nmn kase kanila yung pader), pero kung ang silbi nito eh sign of a gang or turf, kumbaga ginagawa nilang territorial,(pag andun sign nila, teritoryo nila yun kahit hindi) eh purely vandalism lang!
magkaibang kaso kasi yan eh, yung iba they do graffiti to show their craft or to tell something to the people or government, yung iba nman ginagamit lang nila na clan turf sign, kumbaga wall nung gang nila, ibig sabihin teritoryo nila..