Maybe "sociopath" might fit here...
Quote:
A sociopath typically has a conscience, but it’s weak. He may know that taking your money is wrong, and he might feel some guilt or remorse, but that won’t stop his behavior.
Sociopath vs. Psychopath
|
Knowing how my own mind occasionally tries to work, I could see anger driving past conscience to justify evil...and then using suicide to avoid facing the reality of having no legitimate defense.