Christians blaming the recent shooting on schools not allowing god.

On the other hand, since it appears that Ryan Lanza didn't have much of a history besides this it's unlikely it would have made a difference this time.

Yeah, the first sign of problems really shouldn't be when they pick up a gun and open up on innocent victims, but sometimes it happens. And it is thankfully rare. I read ~3 a year in the US. Which means most people are getting the help they need in time... but a couple are not.