Kyle was within his legal rights to carry a long rifle in Wis.
Open Carry.
Open carry is legal anywhere concealed carry is legal. It is legal for all adults (over the age of 18) unless they are prohibited from possession of firearms. A license is not required unless in a taxpayer-owned building or within 1000 feet of school property and not on private property.
It seems to me that he was under age he carried the rifle illegally and is therefor guilty and deserves what he gets.
His parent should have made sure he can carry the rifle legally. Not doing so makes them guilty
Are you basing that on Wisconsin law or on the Second Amendment?