In the interests of self-preservation, man-killers should be killed.
You afraid one piggy is going to do in the human race. Or are you uncomfortable with the knowledge that there are animals out there that might not fear humans.
The desire to "disarm" a potential predator that knows it has the upper hand with an unarmed person, sounds strikingly similar to the mentality that leads to gun bans. The sheep need to feel safe in knowing that wherever they go, and whatever activities they partake in there are no mortal threats. I would rather know that there are wild boars, beasts, big cats, sharks in the sea, etc. and arm myself accordingly, rather than <i>Hope</i> that someone will go after the dangerous ones for me, protect me from having to think of my safety.
I would prefer a .45 and natural selection to a nanny any day.
I understand the need to put down a dangerous animal that acts aggressively in interactions with people (aggressive raccoons, mountain lions stalking near school yards, feral hogs damaging crops, sharks predating near swimming beaches) but this was sport.
Hemingway said there are only 3 real sports, Auto Racing, Bullfighting, and Big game Hunting. He said this, because these are the only activities where there is a good chance of death as a penalty for failure.
The fact that a hunter was killed by a boar tells me a few things, Wild boar really are dangerous game, therefore hunting them is true sport, and there are still some threads of natural selection acting on the human race.
It sucks for the hunter, but "Sometimes you get the bear, and sometimes the bear, well, he eats you"