On the south side around 55th I think there is a restroom that has a roof low enough for people to climb onto. Kids go up there and throw rocks at cyclists. They hit me once and I stopped and called the police. When the police arrived the officers found the kids and started throwing rocks at them. That was fun. The kids came over and told me they were sorry; but I'm sure they could have really cared less about some goofball in spandex riding a fancy bike.