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Ahead on the 9/21 Maddow show

Tonight's guests include:Pete Williams, NBC News justice correspondentDahlia Lithwick, legal editor, Slate.comThanh Truong, NBC NewsBenjamin Jealous,

Tonight's guests include:

Pete Williams, NBC News justice correspondent

Dahlia Lithwick, legal editor,

Thanh Truong, NBC News

Benjamin Jealous, president and CEO, NAACP

Frank Rich, writer-at-large for New York magazine  

E.J. Dionne, columnist for The Washington Post and senior fellow at the Brookings Institution and msnbc contributor

Here's executive producer Bill Wolff with a look at what we're covering we were intending to cover before the breaking news in the Troy Davis case: