It is estimated that every two-and-a-half minutes, a child is treated in an emergency room for a playground-related injury. This does not include the children whose injuries receive treatment outside the emergency room. On average, 15 children die every year simply because they want to play. It shouldn't take a death or debilitating injury for adults to realize that providing safe play environments should be a top priority.
National Program for Playground Safety (NPPS)
Kids Health -- Playground Safety