Probably my favorite Sufjian Stevens’ song, John Wayne Gacy Jr ends with stanza ‘And in my best behavior / I am really just like him / Look beneath the floorboards / For the secrets I have hid.’ But are we really just like John Wayne Gacy, who put up a facade of respectability while he murdered a string of boys?
Technically no. It was earlier mentioned that psychopaths have an impaired capacity to detect fearful expressions. In his book How We Decide, Jonah Lehrer wrote about Gacy’s inability to feel for his victims. These stem out of malfunctions in the brain. Thankfully, there is a very small percentage of people who are like these.
In the sense that we are capable of doing much evil, then yes. From the history of world genocides and human brutality, we have seen that much of these has been done not by psychopaths, but by ordinary citizens caught in senseless and difficult situations. Theorists and social scientists have proposed their share of theories to explain this behavior: Milgram’s obedience studies, Zimbardo’s studies on roleplaying and others.
So perhaps, evil in the sense of doing wrong, is just all too human.