When fast food and processed food first became available, few people realized how much damage it would do. Today, online and cable news streams are going through the same process: it is very easy to get nothing but easily-digested junk news all the time. Each of us can easily live in a world where facebook or Fox or MSNBC sends nothing but news we already agree with, confirming our biases. Clicking "like" on an article that you agree with is infinitely easy. Social change is likely to be hard: active listening to people you disagree with, supportive listening and giving up the stage to people just starting to be active, learning about views different from your own.