The entire idea is a work of fiction (I live in the SW desert). diebir went on a hike and saw beautiful public lands being utilized by ranchers utilizing their public grazing (which they pay for, though perhaps not enough which is subjective). All cattle ranchers that I've ever seen in 25 years have their own land, but depending on the season they lease rights from the BLM.
It's very strange for people to live their whole lives doing some activity in a rural area, then some city person spends a couple weeks in the area, and suddenly these people are being attacked.