U.S. socialist Senator Bernie Sanders of Vermont lays out his ideas for how to thnk about and remedy the injustices of America’s extreme capitalist system in his new book, “It’s OK To Be Angry About Capitalism.” The 81-year-old political activist remains engaged and even iconic as he counsels anger at the powers-that-be and assures readers it’s okay to be angry. Stan Persky thinks it’s a compelling argument.