If there is ever going to be a time to enact stricter gun control laws, that time is now. Below I've provided some articles that hint at possible solutions.
"After a 1996 Mass Shooting, Australia Enacted Strict Gun Laws. It Hasn't Had a Similar Massacre Since." by Will Oremus on Slate.
"The Geography of Gun Deaths" by Richard Florida from The Atlantic.
"Viewpoint: If We Want Gun Control, We'll Need to Compromise" by Adam Cohen from Time.
"Joe Manchin: Time to Act on Guns" from The Washington Post.