He pleaded guilty in 2008 for poaching a black bear.
He knew what he was doing.
What we know about Minnesota dentist Walter Palmer - StarTribune.com
Well, maybe he poached the lion, and maybe not. The article you reference says this:
"The Zimbabwe National Parks and Wildlife Authority and the Safari Operators Association said Tuesday that Theo Bronkhorst, a professional hunter, lured Cecil to a farm owned by Honest Trymore Ndlovu, where the lion was killed by an American tourist. Both Bronkhorst and Ndlovu have been arrested, and Zimbabwean authorities said they are looking for Palmer in connection with the case."
There's no comment regarding whether the hunter was present when the luring was going on or that the guides set this up beforehand. Even if the dentist was present, how would he know the lion came from a protected area? Luring lion and other animals for the hunt is standard procedure and not illegal.
I don't know what he did or didn't know, but given his history, I have no doubt he didn't care where the animal came from and wouldn't have been above it if he thought he could get away with it.
I've met enough trespassing unlicensed hunters on my dad's land to know that the "Trespassing? Killing without a license or lease to hunt on this land? I had no idea!" speech isn't so innocent. I have no sympathy for the guy.
That being said, I do think the news and social media have blown this up beyond what it should be.
It's all just an emotional circlejerk. This guy has become the face of poaching in general, which isn't fair to him, but it gives people the warm and fuzzies because it gives their righteous anger some specificity rather than just "Poachers kill animals illegally!? This is an outrage! Please validate my slacktivism on your Facebook feed."
It has all the parts to be a PERFECT media storm:
Rich white guy
American
Previous issues with the law for a similar situation
Killing or an animal that the West has romanticized
As a trophy
Using his wealth
Did it by luring the animal out
Hunter has disappeared
It's got something for everyone. The animal-rights people are mad because, duh, it's killing an animal. The hunters are mad because of the illegality and because they feel the hunt is unethical in the first place.
Even if he didn't break the law, you would still have people saying "Well, he should be shot anyways."