The attack in Las Vegas, in which at least 59 people were killed and more than 500 were injured, was the saddest day ever recorded on Twitter, according to the Hedonometer, a tool that “measures” mood on social media.
The average happiness level of millions of Twitter users based on their posts was 5.77 on the day of the deadliest mass shooting in modern American history, which occurred at a country music festival in Las Vegas.
>>> VIDEO: The Largest Mass Shooting in American History in Las Vegas
The happiest recorded day on Twitter was Christmas 2008.
The Hedonometer was invented by Peter Dodds and Chris Danforth, a mathematician and computer scientist from the University of Vermont. This tool assigns a happiness score to sentences that start with “I feel.” Each such sentence receives a happiness score on a scale from 1 to 9.
