回答: 美国又响枪了，据说 由 nasastar 于 2021-03-22 18:32

There were more mass shootings across the U.S. in 2019 than there were days in the year, according to a gun violence research group. 2019 had the highest number of mass shootings in any year since the research group started keeping track.  6park.com
By the end of 2019, there were 417 mass shootings in the U.S., according to data from the nonprofit Gun Violence Archive (GVA), which tracks every mass shooting in the country. Thirty-one of those shootings were mass murders. 
4人及以上被射伤，不算枪手算大规模枪击，4人或以上死亡算屠杀。2019 31起屠杀。
GVA defines a mass shooting as any incident in which at least four people are shot, excluding the shooter. The group also tracks mass murders as defined by the FBI — incidents in which at least four people are killed. The FBI does not have a formal definition of a mass shooting.