They are, to me, fragments that sometimes flow together, sometimes are abrasive next to each other. Similar to patterns in life. Take a thousand kids, all with the same intent, and you have a threat. Not a physical or violent one, but a visual one. People don't know what to do with this thing called graffiti.
Kids are so into it.
And I like that whole thing because it opens up possibilities for kids that normally don't have access to the arts, who aren't pushed creatively. I would hope every kid has that opportunity. It's an excellent introduction to form. Compelling art to me is a name carved into a tree. Sometimes a rock soaring through a plate of glass can be the most beautiful, compelling work of art I have ever seen.