Demz’s Death: Witness, Cop’s Record Raise Questions About Graffiti Artist’s Killing By Trevor Bach- 10 Dec.14 Hours after Delbert Rodriguez, a 21-year-old street artist known as “Demz,” died last night, the Miami Police Department reiterated its version of what happened: An undercover cop chased Rodriguez after spotting him tagging a building in Wynwood early Friday more ยป