"How many wolves do you know who can read your PRIVATE property signs?"   Ummm...none because they are dumb animals.  lol...and that is EXACTLY my point.  We have a right to protect out animals on our property. Lethally. Put up fences to keep them out.
I live with wolves and witness what they do to animals: wildlife such as elk, moose, deer, and pets(dogs, horses, etc.) and livestock.   It's called reality.  Real life. 
Case histories? lmao. I don't need to prove anything with internet stats.  Besides I do not see any "case histories" or any credible stats offered by the author of this editorial. None.