Cooper, what is he playing at?
In Oklahoma territory where there was no law and nothing you could do if raiders massacred your family while you were out of the ranch, it seems understandable that settlers would fight back and lynch these men when they could, rather than let them carry on regardless, after all this was the Old West, not a hippy commune.
So Cooper should maybe have forgotten about these guys who posed no threat to law abiding people and pursued the guys who were commited crimes at the present.