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.
Ravi Batra is a professor of economics at Southern Methodist University, Dallas. This article is based on his two books, "The New Golden Age" and "Greenspan's Fraud." His web site is ravibatra.com.