It’s normally well off white people who own pleasure horses and the psycho petafiles align with annyfa.
Plus, there’s that tortured and lynched puppy.
Lots of noise and LEO warnings to ruralites about their barns and critters.
The "higher ups" change their names and affiliations like we change our socks.
Google conflict industry - it's there.
It’s not just that, I think.
Local media made much of some mounted protesters a few days ago. A couple in San Francisco,
https://www.sfgate.com/news/slideshow/Protest-horses-SF-Mission-District-BLM-rally-203294.php
one in Oakland.
I think the race of the horse owner is a factor here, as you have pointed out. Horses are very deeply symbolic still even in our (largely) urbanized, post-agrarian society. A man on horseback is a powerful image.
So, they want to take the white man’s horse, or horses.
Symbolism is a big deal to these people.