"Of 267 incidents this year classified as mass shootings by the Gun Violence Archive, nearly all can be tied to gang beefs, neighborhood arguments, robberies or domestic incidents that spiraled out of control.

Indiscriminate slaughter by a lone gunman blasting away at a store, school or some other public place is rare, according to a Washington Times analysis of the archive’s data, accounting for less than 4% of the total."

https://www.washingtontimes.com/news/2022/jun/16/street-braw...

This is 2022. These numbers roughly replicate for any year though.