Top Issues of the Week, then...Ethnic Cleansing (the mass expulsion or killing of members of an unwanted ethnic or religious group in a society) is sadly too much a reality in world history, but today Islamic Jihadists are on a rampage around the globe, such as Boko Haram in Africa who are murdering thousands of Christians. Can our nation stand by and do nothing? Edwin Black, NYTimes Best-Selling author of "War on the Weak," talks about Nazi Germany's ethnic cleansing of Jews, helped by the American eugenics movement. Facts are stubborn things.