The same guys who showed up in the Bundy incidents in which BLM was trying to round up the rancher's cattle are now massing in Harney County, Oregon. Once again, it's a BLM matter. Once again, it's cattle ranchers. The father and son were convicted of arson when a back-burn they'd set on their private range land spread into federal forest land. Amazingly, when the Forest Service or BLM set a "controlled burn" that somehow gets out of control, they're never to blame.
Years ago, a co-worker owned several acres of land in eastern Oregon, which he affectionately referred to as the "Rock Pile". And sure enough, a USFS "controlled burn" on adjacent federal land went out of control and destroyed everything on the Rock Pile. Not their problem; it was an Act of God.
In the case of the ranchers, though, it became arson. They served their sentences back in 2012, but the feds weren't done with them: prosecutors appealed and a federal court ruled that the two had been improperly sentenced and must serve additional time. They've also been labeled as "terrorists".
Unsurprisingly, all of this has roused the dander of some folks, and as in the Cliven Bundy case in Nevada some time back, a bunch of them have shown up in the town of Burns, armed to the teeth and determined to right this wrong. Inasmuch as the federal government has, in recent years, apparently declared war on its own citizens (without actually referring to the war by name), the occasional backlash should not be considered unexpected.