In the first place, are the kids on that age allowed to be on that area? I cannot really say because the quality of the video isn't clear.
Fake. Absolutely. Nobody is going to be juggling bowling balls. In fact those are way to heavy to juggle. Plus the way the kid fell isn't consistent with the bowling ball falling on his head. On top of that the bowling balls seem way to light if you ask me.
I think, it's fake, may be just made to upload only and intentionally placed the child to do that. It seems fake...