I am not sure why someone would think that blowing up a room full of teens and young adults will solve anything. What I can say for sure is this: it's a senseless act, deplorable and very sad that such a thing even occurred. People will have their summations about why it happened, but truly after all is analyzed, it only comes down to being a great loss. There will be a void left in hearts of many. I am glad to see the alignment about prayer because all of us, all over the world definitely need it.
I pray for the families who have lost a loved one to this horrific act of violence and hate.