Graffiti : Form of art or a crime?

For an artist, art has no limit. Creativity is endless, there arent any rules as to what makes art , art or what makes art appropriate/right. For some people, graffiti is a form art, a different way to express an idea about something using A wall or property. And for some graffiti is a crime, vandilizing property. In my opionion graffiti is art. And it should be charged when done. And individual should be allowed to express their art in any form. That are shouldnt have any limits or rules or else not much creaticity, and creativity is a key point to art. I am. Confused about that people who think that graffiti is a crime, what is their definition of art, and what fo they is arts limit.