It's human nature that nobody wants to be portrayed as The Monster. Fair enough. However, if you strip away the mountains of bullshit that people inevitably create (easier said than done, I admit) one fact emerges:
We are the monsters.
Nobody is free from the demons that dwell within all of us. Nobody. Granted, some people's demons are stronger than those of others, and the evil they do sometimes manifests differently. But it's there, and only a fool would deny it.
However, that presents us with the challenge to master and subdue that demon. It can be done; and there exists centuries of effective and proven methods for accomplishing this difficult but not impossible task. Self-honesty is the first step.
But the demon triumphs when we deny its existence.