The world continues to react to last night's deadly Las Vegas mass shooting, which has left at least 58 people dead and over 500 more injured, in what's being called the deadliest mass shooting in modern U.S. history.

As horrific details continue to emerge, LeBron James, Kobe Bryant, Mike Tyson and many other athletes are taking to their Twitter and Instagram accounts to express their pure shock, outrage and prayers over the terrible events, which took place at a country music festival.