being constantly taunted and having limits pushed until he needs to assert himself. Then having those limits pushed until he needs to assert himself very proficiently. I'm not sure about insane, but I sure have had to see the counsellor about quite a few things over the years.
Depends on the man.
Unfairness and disrespect
Prolonged sensory deprivation, torture, trauma.
The realization that world peace is virtually impossible.
Search gang stalking/community mobbing.Its a covert agenda to do exactly that.