I know many people want strict gun controls but that would not stop a sick person like the school shooter from obtaining a weapon illegally in order to carry out his sick plan. The government once thought they could stop drinking by just making it illegal. All that accomplished is to make gangsters rich like Joe Kennedy, Capone,etc.. But it didn't stop anyone who wanted alcohol from getting it.
Don't think stronger gun control will do much to prevent these tragedies like these.
RIP and prays for the grieving parents.