I was at a show. This group of riders from my old barn ran(mounted) between the trailer that we had our horses in, and my coach's grandma's truck. We confronted them, because we felt that them trotting and cantering right by our trailer is dangerous. They told us that they do it all the time, no one cares, and that we should mind our own business.
Keep in mind, they're 13.
IS it dangerous, or just rude to run between trailers, horses out or not?