Despite having authored two autobiographies, Barack Obama has never written about his most important executive experience. From 1995 to 1999, he led an education foundation called the Chicago Annenberg Challenge (CAC), and remained on the board until 2001. The group poured more than $100 million into the hands of community organizers and radical education activists. ... In works like "City Kids, City Teachers" and "Teaching the Personal and the Political," Mr. Ayers wrote that teachers should be community organizers dedicated to provoking resistance to American racism and oppression. His preferred alternative? "I'm a radical, Leftist, small 'c' communist," Mr. Ayers...