Shooting...
wow...nasty.
I guess that's an effective way to kill a bunch of people. Up high, clear line of sight to target, hard to get to the shooter, target rich environment, proper weapon type for the job, plenty of ammo.
Insane SOB.
Not that we know who did it or their motive but you know why the muslim would do something like that...they explain why they do it. It's evil but at least you know.
If it's just a wacko...you have to wonder what could make someone that sick or evil.
Just, wow! How horrible.