75yr old man kills 13yr kid

[enough]

13. Extreme paranoia, anger and hostility, fixating on the belief that a particular person is stealing

from you, often with racist overtones -- all of these are common symptoms of the early to middle stages of Alzheimer's and other forms of dementia.

No way to tell if this is what's going on with this man, but the problem is very common and can be dangerous, especially with so many people having guns in the house. The issue of when to get rid of the guns is just as problematic with Alzheimer's as the issue of when to get rid of the car.