Do you have further reading on these events? I agree with you 100% but I would argue that these growers are probably some of the lesser evils facing our public lands.
I may shake my head at clear-cutting and overgrazing but I'll say that I've never been chased off public land by a rancher nor fired upon by lumberjacks. The marijuana growers are ... unique.
Don't have a link handy, though.
My hill walking dad curses the mountain bikers and their damage to the terrain - leave nothing but footprints, take nothing but memories.
Enjoy your lands.