October 28, 1994 - Connor Stephen Betts

On August 4, 2019, 24-year-old Connor Betts shot and killed nine people, including his brother, and wounded 17 others near the entrance of the Ned Peppers Bar in the Oregon Historic District of Dayton, Ohio, United States. Betts was fatally shot by responding police officers 32 seconds after the first shots were fired.

A search of the shooter's home found evidence that showed an interest in violence and mass shootings and that he had expressed a desire to commit one. He considered himself a leftist and voiced his support for Antifa; a preliminary assessment did not indicate that Betts had a racial or political motive. The attack occurred just 13 hours after a mass shooting in El Paso, Texas.

Content sourced from en.wikipedia.org/wiki/2019 Dayton shooting under CC BY-SA 4.0.