Two take-aways from this -
- "warning shots" only serve to warn the other person that you will not shoot them. (We all know why warning shots are illegal. This is about why they are not practical.)
- and this is the hard one: discretion is the better part of valor. Or, if someone threatens to come back and beat the snot out of you it is probably better to stop what you are doing (no matter how innocent, how unprovoking, and how much you really/truely want to keep doing it) and withdraw. Even if Silva was on his own land the way to deal with trespassers is not to threaten them with deadly force. This in no way excuses the trespassers (in general or in this specific case) from their obligation to be lawful as well. But we have here a situation where someone was on property not theirs being interferred with in the course of their lawful and peaceful activity by a bunch of folks who I will, for the sake of discussion, give the benefit of the doubt and say did not know they were trespassing. Silva had no authority to enforce trespass against them. At best he had an obligation to report the trespass to the airport authorities.
None of this excuses in any way the other guy's alleged assault. It also in no way expresses my outrage that the other members of the mob are not (presently) being criminally charged. It also in no way expresses my outrage that the others in that group apparently did not intervene to prevent/stop the beating.
In a "perfect" world all this would have fallen into place and the worst injury to either side would have been hurt feelings. Unfortunately our world is not perfect and we will feel the consequences of our misjudgements.
And for the record, I am well up there in the top 10 of folks who find it difficult to walk away from wrong-doing. (About the only thing in my favor is that I have never seen personal combat as the first choice of how to resolve disagreements,) I'm also well aware (oh, boy am I ever well aware!) that trying to do things the right way will not always result in things being made all better.