Sure, Las Vegas has always been known as "Sin City", and that it has often been. But the thing about sin is, it's never satisfying. People who get caught up in sin often find themselves seeking more and more, bigger and better thrills, fixes, or indulgences.
Las Vegas Police Arrest Student Threatening a Shooting on Instagram–This Should Have Happened in Parkland
The Broward County Sherrif's Office and local FBI officers both ignored multiple crimes Cruz committed and threats he made online, once claiming he was going to be "a professional school shooter" and expressing on another occasion that he planned to kill people.