**SNIP** Police initially shut down the carnival in Chester County Saturday night after a group of juveniles created what officials described as an "unsafe environment" for those at the fair. Additional officers from agencies around the county were also called in to help with crowd control. While they didn't specify exactly what happened, police said the large crowd in the outer lot of the Exton Square Mall was creating a disturbance. **SNIP** Police are also investigating a fight that they say occurred inside the mall after the carnival was shut down. The department released surveillance footage captured by a business...