Yeah, it's really nuts how all these situations, seems like something could have been done. Even though hindsight is 20/20 a lot of the situations, it isn't just, "this kid said he thought about harming others once" it's very blatant. Parents calling in very disturbed by the videos, behaviour (before the revenge video/manifesto, the day of), therapists, teachers making calls to police, department heads at school, parents.
James Holmes, can't remember all the details, but seemed like warning signs were all over the place. And the mom just left the gun safe open to him, or gave him the combo.
That's another thing that's wrong:
In THIS situation, sounds like they were doing a lot. Seemed like the system was at fault.
I don't think mentally disturbed people should always be locked up either, but sadly, as it is, that's the only way a red flag goes up if that person later tries to buy a gun. I'm sure these laws are incredibly hard to pass, but in theory, seems so simple. Doctors/Therapists/Judges deem some kid a danger to himself and others, that should, at the very least, temporarily prevent the purchase of firearms, IMO.
There's always going to be situations that just can't be prevented; guys getting guns illegally, or using knives, or homemade explosives, with very little warning signs. But seems like there's some situations that can be prevented.