Sadists and psychopaths
Someone who gets pleasure from hurting or humiliating others is a sadist. Sadists feel other people’s pain more than is normal. And they enjoy it. At least, they do until it is over, when they may feel bad.
The popular imagination associates sadism with torturers and murderers. Yet there is also the less extreme, but more widespread, phenomenon of everyday sadism.
Everyday sadists get pleasure from hurting others or watching their suffering. They are likely to enjoy gory films, find fights exciting and torture interesting. They are rare, but not rare enough. Around 6% of undergraduate students admit getting pleasure from hurting others.