Yes, some are. Earlier this year, there were about ~100 mentally ill/homeless/drug addicts, including their children, stalking me and provoking me in public for their slander campaign while I was in Nebraska, traveling for work.
Generally speaking, I believe most gang stalkers are cowards or sadists. Apparently, neither is outright considered a mental illness.
“Sadism, characterized by deriving pleasure from inflicting pain or humiliation on others, is not classified as a mental illness in itself. However, it can be associated with certain psychological disorders, particularly when it leads to significant distress or impairment in functioning. While sadistic tendencies can exist without being a mental illness, they may become problematic if they interfere with a person’s life or the well-being of others.”
“Being labeled as a “coward’ typically refers to a person’s perceived lack of courage or willingness to face danger, difficulty, or pain. This characterization is more of a moral or social judgment rather than a clinical diagnosis. It is not classified as a mental illness. However, feelings of fear or anxiety can be symptoms of various mental health conditions, such as anxiety disorders or phobias.”
On Quora: https://qr.ae/pCvN5O