The Johnson City Police Department (JCPD) is searching for a group of people responsible for thousands of dollars of vandalism damage in the downtown area from August 18-29.JCPD said there have been around 20 reported cases of vandalism that have affected area businesses.According to JCPD, graffiti has been painted on several buildings throughout the city, but especially in the downtown area. Among the damaged structures is the Northeast State Community College campus in downtown Johnson City.