Didn't see this posted, someone just showed me this at work.
A 15 year old kid shot and killed his mother and a 9 year old sibling as they lay in bed the other night. Went in to his little sisters' room, 5 and 2 years old, killed both of them. Then killed the old man when he walked in the door from work at 5AM.
He sent pictures of the dead mom to his 12 year old girlfriend and was on his way to kill her parents, and then go on a killing spree at a local Walmart.
He walked right up to his parents' unlocked gun cabinet and grabbed the AR-15 and shot the mother first, holding her bloodied face up to the 9 year old who was in bed with the mother at the time, to show him what he just did.