..this was an open-air classical concert we were attending. All ages, kind of Christmassy. Kids were dancing away close to the stage while their parents sat back watching - but some got too close. There were infants sitting on the stage, and as this was a full orchestra, there wasn't much room. And yes, some children even had the nerve to attempt to play with the instruments both mid-recital and during short breaks. At no time did a parent intervene or take their child away. WHYY? 