Monday I was up at Harvard to give a talk to Nicco Mele's class at the Institute of Politics on "The Making of the President 2.0: How the Internet is Changing the Political Game." (The powerpoint is here.) While I was there, I was fortunate to get an hour with Marshall Ganz, who teaches public policy at the Kennedy School and is attached to the Hauser Center on Nonprofit Organizations. Ganz is a giant in the field of community organizing, with seminal experience going back to the civil rights movement and working with Cesar Chavez's United Farm Workers. More important for the present moment, Ganz was the architect of Barack Obama's grassroots organizing juggernaut. He played a central role in...