wow. Heaven forbid happy children run outside and play and holler when mandated quiet hours are not in effect. Perhaps we parents of youngsters should shut them up in the house and give them each a video game to keep them quiet and docile (and fat). There is a reason that volume levels are referred to as "indoor" voice and "outdoor" voices. Griping about children playing outside is completely ridiculous and as a mother I am ridiculously offended that you would be offended.
Put up a fence and earplugs if you don't want to hear children play.
*rant over*