Incest a wholly human concept? Try telling that to my rams!

And read the other articles in the Guardian; this one, which states:
"This beast may simply have got too big and too old for the managed land that it was on. It was getting to the point where he needed to be shot because he had already bred and there was a chance he could interbreed with his own daughters and granddaughters. While it is always a shame to lose an iconic animal, it's much better than starvation and disease,"
And this one, which adds:
"Red stags are in season and as long as the stalker was the landowner, or had the permission of the landowner, and used a legal calibre rifle, then no laws were broken in shooting this stag."

But I suppose it's far easier to jerk the knee than actually to understand the issue. The main bones of contention here are the decision to shoot at the start of the rut and the apparent condition of the stag. I can't make a judgement because I simply don't know the facts. That won't stop a lot of needlessly angry people proving that ignorance isn't bliss, of course.