One Year Later, Experts Dig Deeper to Find Vegas Shooter’s Motive Prison Planet.com Posted on October 1, 2018 Posted in Aggregated No Comments Tagged with U.S. News WSJ | Theories emerge as officials struggle to find reason behind the deadliest mass shooting in modern U.S. history. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email