Tana French

If you're writing a scene for a character with whom you disagree in every way, you still need to show how that character is absolutely justified in his or her own mind, or the scene will come across as being about the author's views rather than about the character's.

Every time you log in to Facebook, every time you click on your News Feed, every time you Like a photo, every time you send anything via Messenger, you add another data point to the galaxy they already have regarding you and your behavior.