Cheers to the moms who were playing with their kids, and took the opportunity to teach them some playground manners. You made sure they took turns, and explained why that was important. You also made sure they were aware of the other children running around, a very good idea. It avoids accidents, and also helps your kids learn to interact with others. Spending time at the playground is a great way for the kids to expend some of that extra energy, but it's also a great place to teach them how to get along with other children. Taking turns and playing fair are lessons that will serve your child well. 
Jeers to the shouting dad. Not only were you screaming like a crazy man at the playground, the kid you were shouting at wasn't even your own, and the incident was entirely your fault. You weren't paying any attention to your toddler as he ran around, and he was trying to climb up the spiral slide as some older kids were trying to slide down. There's was no way that little boy could have known your kid was at the bottom. It's your responsibility to make sure your toddler is safe at the playground. If you were concerned that he would get hurt by the older kids, maybe you should have taken him to the toddler section. Screaming at another child for something that wasn't his fault was just disgusting. I hope you're proud of yourself.
