The problems can't be "multiphasic" and "that basic" at the same time.
The kid got shot because he was open carrying in a state where it's legal to open carry, by a mentally deficient cop who had already proven himself to not be able to properly handle a weapon who shouldn't have been on the force to begin with. It's not the parent's fault, or society's fault, or the fault of no orange tip. It's the fault of that cop and the department that hired him. That's as basic as it gets.
The kid got shot because he was open carrying in a state where it's legal to open carry, by a mentally deficient cop who had already proven himself to not be able to properly handle a weapon who shouldn't have been on the force to begin with. It's not the parent's fault, or society's fault, or the fault of no orange tip. It's the fault of that cop and the department that hired him. That's as basic as it gets.