Somedays you learn something about people that you know that shocks you. Sometimes those things make you think about a range of things.

As I've always said - that one person you just don't like (even if you can't put your finger on why) there is someone who loves them.  It's always very apparent when you've got a mutual friend and you find yourself scratching your head wondering why or how on earth your mutual friend finds cause for their relationship with said person.

The scary/bad/evil person is some dark skulking figure without a face, not someone you know.  That's why they say often it is someone close to a victim, the last person you'd suspect, who was the villian.

We often forget that it could easily be us that is the villian in someone else's story.  It could easily be any one of us.
1 Peter 5:8 Your enemy the devil prowls around like a roaring lion looking for someone to devour.