I'm betting the cart is responsible for most of the injuries, not the horses.
It was a tragic accident
. One from which, unfortunately, the horse owner is unlikely to recover financially.
I used to ride my heart horse in parades. He did very well with the crowds, screeching children running amok, balloons, fire engines, and the high school marching bands. Wanna know what freaked him out? The LINES on the road!
He was controllable, but those lines were going to eat
him, especially the yellow ones!
Regardless of how well trained an animal is, you always
take a risk going out in public with them. Nonhorse people are unaware of the potential havoc an animal like that can wreak, so we as owners need to try and make sure they're as trained and controllable as possible. Even then, there are still tragic events that happen.
Amish cart horses are sometimes hit and killed by drivers speeding, coming up over a blind hill too fast, or because the horse spooks.
We can't protect our horses or the general public from everything
. Saying that no horse EVER should be on public roads or in crowds just isn't practical.
Sh*t happens sometimes, even when we've taken every precaution. Doesn't mean all horse use in public should be outlawed.