The death toll continues to rise on Monday in Las Vegas, Nevada, where a gunman killed at least 59 people and injured at least 527 others at a country music festival on Sunday night. It was the deadliest mass shooting in modern US history. The incident marked the 273rd mass shooting in 2017, according to the nonprofit Gun Violence Archive, which tracks shootings in the US. To put this into perspective, we are 275 days into the year, which means the US has had nearly as many mass shootings as days in 2017. There have been 273 mass shootings in the US so far in 2017 — here's the full list ----------------------- Unbelievable.