It is an unconscious perception of the world that causes us to see mass slaughter of some animals but not others as normal, and tells us we should not get too worked up about it.
Social media has been a powerful tool for Marissa Alexander's defense, while providing creative ways to discuss domestic violence and self-defense.
Valerie Tarico is a psychologist. She is the author of 'Trusting Doubt: A Former Evangelical Looks at Old Beliefs in a New Light." She is also the founder of WisdomCommons.org.