Paul Kessler was a 69-year-old Jewish American man who was killed during an altercation on November 5, 2023, between dueling pro-Israel and pro-Palestine demonstrations in Thousand Oaks, California, United States. Kessler's death was ruled a homicide. On November 16, suspect Loay Alnaji was taken into custody on charges of involuntary manslaughter and battery in the death of Kessler. He pled guilty to both charges in May 2026.