I'm not acting like he injured anyone. I'm simply saying that, if the claims are true, he appears to have acted in an illegal manner. Nothing more, nothing less.
I'm not saying his alleged actions were wrong. Just that they may have been illegal.
You don't know what happened either. There's a big difference between being told "stay where you are until the authorities show up" and "I'll shoot you if you run, and my dog is hungry for buttocks."
Neither of us know what really happened. Presumably we can both agree that there is a line that one must not cross when detaining a lawbreaker, and past that line you become a kidnapper, imprisoner, torturer, or murderer. Clearly you cannot simply execute anyone you find on your large ranch, I'm sure we can both agree on that.
The illegal immigrants obviously don't have extra rights versus an American citizen. If the rancher broke the law, he broke the law whether the tresspassers were from Mexico or Wisconsin.