Staten Island police arrested a local graffiti writer after he allegedly tagged an undercover cop car. On top of that bold move, KEYONE unknowingly managed to vandalize the one vehicle assigned to 120th Precinct Commander John Denesopolis, virtually guaranteeing the force would come down on the dimwitted 19-year-old. On Sunday, the police provoking vandal was caught while painting on a box store, then rearrested on Wednesday and charged with tagging the police chief’s undercover ride.