Each case is an individual...but the law must be for all
Based on the info given here (and I haven't even looked at them, or their property), this sounds like an indefensable (undefensable?) shooting.
Who would shoot an innocent 7 year old boy dead like these so-called people did?
Without defending them in any way (and I really don't mean to sound like I am), but the facts (at this time) do not seem to indicate that the intent was to shoot a 7 year old boy dead. That was the result, and due process will make them pay. But it appears that the shots were fired at the vehicles, with no knowledge of who was inside.
It is quite likely that claiming trespass, and the legal right to shoot was the only possible excuse they could come up with (and a feeble one at that).
It may likely come out that the shooters were not of sound mind and unimpaired judgement. But making it sound like they deliberately picked off the boy as he rode by (or anything like that) doesn't aid in clear understanding of what actually happened.
When they plea bargin (and I think it highly likely they will), and they claim "we wasn't tryin' to kill anyone, just scare 'em off", then the prosecutor will decide just how to deal with it. Until then, lets just let the system work.
Yeah, my gut feeling is, after conviction, fry'em! But until then, lets not stir the pot more than we have to.
Its not a gun issue, its not a law issue. Its about a couple of apparent wack jobs who thought they had the right to shoot trespassers, and killed a little boy in the process.