Harassment about the military

For almost a decade, total strangers have made remarks in public near me, or to me, about the military, on and off. I got out of the military in 1978. These individuals will refer to me as "enlisted" (which is false), or an "EMT in the Navy" (also false; I was a healthcare worker in the military, but not now; I have a degree in the arts). Some persons will do this in harmless way; others will actually harass me in stores such as Walmart with personally directed insults. During the four years I lived in Arkansas, literally hundreds of strangers made remarks to me or near me about the military for no apparent reason at all, out-of-the-blue. I have reported all this to police before.
I think there are only three possibilities here about the cause.
1. These individuals are aggressive militarists who are infatuated with the military.
2. These people suffer from a mental disorder such as OCD.
3. The individuals are deliberately annoying or harassing a military veteran because they are anti-military. What do you think?