A four-month Kaiser Health News investigation uncovered dozens of cases across the United States in which people with dementia used guns to shoot themselves or others. From news reports, court records, hospital data and public death records, KHN found 15 homicides and more than 60 suicides since 2012, although there are likely more. The shooters often acted during bouts of confusion, paranoia, delusion or aggression — common symptoms of dementia. They killed people closest to them — their caretaker, wife, son or daughter. PBS NewsHour produced a video story.