https://qz.com/1092194/las-vegas-shooting-the-scariest-part-of-facebooks-safety-check-in-a-mass-shooting-fb/ >A shooter opened fire Oct. 1 on a music festival in Las Vegas, Nevada, killing at least 58 people, and injuring hundreds more. It’s the deadliest mass shooting in US history, and Facebook has turned on its “safety check” function, which is activated when a group of people are in a crisis situation, for Las Vegas. People can use the section to check in on friends and family who may have been affected by the event, donate to fundraising efforts, and to learn more about the situation as it unfolds. >Initially, the safety check feature for Las Vegas showed four news stories prominently on the page.