Location: Los Angeles

Though this piece didn't use the drug directly, its illicit nature (and our love of street art) helped land it on this list. The artist Plastic Jesus installed a giant hundred-dollar bill and a huge pile of faux-caine outside an Urban Outfitters in Los Angeles earlier this year. In fact, he did it twice. The piece, called American Excess, was removed promptly from the streets both times—first, right near the 2012 holiday season, and again on July 4. "The piece was motivated by the fact that cocaine is everywhere in society but it's like the elephant in the room. No one mentions it in polite society," the artist told Complex.