What is graffiti? And why have we, as a culture, had the urge to do it since 30,000 BCE? Cultural historian Amanda Hallay explores the ways in which graffiti works to forever compel and simultaneously repel us as a society. When did graffiti turn into graffiti art, and why do we now pay thousands of dollars for a Banksy print when just twenty years ago, seminal graffiti artists from the Bronx were thrown into jail for having the same idea? Graffiti...