Graffiti?

As I mentioned in my blog about tattoos, my first couple of posts are being focused on more controversial artistic elements. This week's subject is graffiti as art.

From the murals of Diego Rivera and Grandma Moses to the tagging of buildings in New York City by gang members, graffiti is an art form that has always been questionable. Some people say that it is no more than vulgar vandalism, while others believe it is as legitimate as any other painting. In some instances--as with the gangs of New York City--it is punishable by law. In cases such as Grandma Moses, however, it is condoned.

To complicate matters further, some museums are now exhibiting "tagging" on their walls. Many graffiti artists are speaking out about their art, saying that it is another way to express oneself. In fact, some graffiti artists are actually becoming legitimately famous for their work.

My question to you all is this: Do you consider graffiti a legitimate art form? Where does the line get drawn?