This honestly makes me sick to my stomach. The poor horse was laying there completely motionless and they laugh at it... I seriously don't get people like that. No animals were injured in filming this video today? I'm sure.
Hmmm, well it doesn't appear they did it on purpose... horse kicked, spooked, then bolted into a stump. Is that the part that is stupid?? Or is it the laughing that bothers you?
The people who run to the horse's aid and who initiate unhooking the horse don't appear to be the ones laughing (at least not initially). In fact, they were pretty quick to tend to the horse! The ones manning the video camera and behind the cameraman are the ones who were laughing about it - if they were non-horse people they might not have truly realized, or considered, the potential for serious injury (think we've all seen that type of behaviour and scenario). I imagine the kid driving might have found it amusing, thinking his horse was okay - that was a pretty big flip! I've certainly laughed more than once initially when something bad happened such as this, prior to being able to really look at the horse, thinking everything was okay (and it was). Sort of a first reaction, then the ow(!) and evaluation for damage. I dunno, I mean looks like the horse maybe wasn't properly trained to pull the cart (did I miss something?), but it's not like the people put the horse to the stump specifically, just for kicks (unless, again, I'm missing something). Considering everyone was alright (the horse appears sound, albeit I am sure he will be sore!), I can see how people might find it funny, even if most of us do not.
....horses should be trained in such a way that they not only love their riders, but look forward to the time they are with them.
~ Xenophon, 350 B.C.
As a horseperson I consider it stupid behavior to put a pony who doesn't seem to know how to drive well together with a teen, then get some laughs out of the pony bolting twice. Continuing to laugh at a young person slamming into the ground, and at a pony who is not fighting to stand is even worse.
Even if I didn't know anything about horses I'd at least stop laughing long enough to see if the boy was dead.