So how would universal background checks have prevented this shooting? The truth is that gun laws are intended to punish gun owners, not save lives.
and to make lefturd loons feel good inside about themselves, because they think they are doing something good, For emotionalists, how they feel inside is more important than reality and reason.
If he was arrested for beating the crap out that classmate when he was senior in high school instead of just getting a tap on his hand I suspect he might not have gotten that gun.