“A shooting last weekend at a children’s birthday party in California that left four dead was the 17th mass killing this year — the lowest number recorded since 2006, according to a database maintained by The Associated Press and USA Today in partnership with Northeastern University.

The mass killings — defined as incidents in which four or more people are killed in a 24-hour period, not including the killer — are tracked in the database maintained by The Associated Press and USA Today in partnership with Northeastern University. Fox, who manages the database, says mass killings were down about 24% this year compared to 2024, which was also about a 20% drop compared to 2023.”

From ABC News.