Thanks for sharing. Interesting.
From everything I've read, Hernandez was very close to his dad, and was a totally normal kid. Then, his dad died unexpectedly during a routine medical procedure, and Hernandez apparently never recovered from that.
I'm not a shrink, but, maybe he felt abanonded and that led to severe rage/anger issues. Teen boys need their dads.
(Not that any of this is an excuse for murder).