Both sides are idiots.
However, I have had the misfortune to be on the receiving end of a number of animal rights protests a fair few years ago due to my job at the time.
I used to be a service engineer, a large part of my work involved visiting various pharmaceutical research sites in the UK, most notably Huntingdon Life Sciences but all the other major ones as well, to fix and install equipment.
I had, on a number of occasions, to drive through picket lines of animal rights protestors. I can assure you, it was a throughly unpleasant experience. As noted previously, these people can be extremely threatening and abusive.
For example, stepping in front of and trying to block my car whilst screaming insults:
"I hope you get AIDs!"
"I hope your parents get cancer and die!"
"Pedophile!!!"
Taking photos are the car as you drive by and yelling "We'll find where you live!"
etc, etc
But what is hard to describe is the sheer unadulterated hatred on the faces of a lot them, directed at me whilst I was simply driving to work, often to simply to change a fuse or something. Hatred is such a powerful emotion, I suspect these people get off on it.
One of the most bizarre was, whilst at work on site in the midlands, an animal rights protest started to form at the main gates. I was advised to leave early and by the back gates, which I did. Upon pulling out onto the road I was confronted by a lone female, quite attractive and well dressed in office clothes, completely normal looking and about the same age as me at the time (late twenties). But she was clutching a large, about 3 foot high, teddy bear. She then proceeded to step in front of the car, blocking me in on the narrow road and unleash the most vile stream of invective I have ever heard in my life, both before and since. Fortunately, she stepped to the side window to get closer to me and I was able to make my escape.
I've watched the video, and maybe she did charge the protester, maybe she didn't. I'm not sure exactly how much control you have over a horse, I've never ridden one. But it was a short video and who knows what has happened before and after. But i'll stick to my original statement that both sides are idiots.
Not that I have a great deal of sympathy for the hunters, the very few people I've come across who hunt on horseback have been morons with a superiority complex - but not quite in the same league of unpleasantness as the animal rights protestors I've come across. In truth, I couldn't really care if hunting on horse back is allowed or banned - I suspect that's true for most people.
Also, foxes may be cute and furry but they are still vermin and need to be controlled. That being said, hunting them with dogs is a pretty inefficient way of doing it and possibly crueler than other methods.