There are many cruel people in the world who disguise themselves as good people. These people hurt and attack others using Machiavellian emotional blackmail based on fear, aggression, and guilt. They appear to be friendly, but beneath that facade they hide ulterior motives and deep frustrations.
They say that people cause harm because they themselves were hurt at some point in their lives. Or that those who have been hurt, will hurt others. However, even though these ideas have a basis in truth, there’s another aspect that we don’t always like to admit. Evil exists. Sometimes, cruel people have certain biological components that incline them towards certain aggressive behaviors.