Biggest failure is his father. He is as much responsible for the deaths as his son. What a worthless POS.
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Kinda like the parents of Columbine killers Harris and Kleybold, who were clueless about what was going on in their own homes and let their kids dress and act like idiots.
Its not so much that he was clueless, he actively participated by handing those guns back after they were removed for a reason