Some people are just born dumb

Yep, saw that last night.  Stupid parents is an understatement.

I do have to say I was very impressed with the kids instinct and speed.  I could see somebody curdling in a ball when faced with that situation but he kept his witts and probably could have bean Usain Bolt at that moment in time.

My brother worked at Yellowstone for a season back about 15 years ago, and he said things like that are very common. The term for people like that is "touridiots". They put their kids on the back of a bison to get a picture of the kid "riding" the animal, then freak-out when the animal starts walking away. They tease the animals, not understanding that as soon as it sees you as a threat, it'll attack. 

This group was very lucky that nobody was hurt. "nervous laughter", maybe, but coaxing the kids to get closer because "it's friendly" isn't wise. Bison are awesome animals, but the only time I intentionally get close to one is when I cut into its medium-rare flesh!

It doesn't take a bison expert to tell the bison was agitated and putting it's head down in a bluff charge pose.  I'm surprised it was that patient.