Looks to me like a few .50 cal Barrets could raise some dust around the ridges where the jackboots deployed. I know a fellow that has a 338 Lapua that can do the same. I’d bet a plain old 338 SAko or 7mm Mag could pop off a varmint at such distances. Many ex service men and others have such target pieces.
I love that word varmint. My dad used to say that word all the time. LOL. How applicable for those blm bastards.