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Ahead on the 5/21 Maddow show

Tonight's guests include:Cory Booker, (D) Mayor of Newark, NJAndrea Mitchell, NBC News chief foreign affairs correspondent and host of “Andrea Mitchell

Tonight's guests include:

Cory Booker, (D) Mayor of Newark, NJ

Andrea Mitchell, NBC News chief foreign affairs correspondent and host of “Andrea Mitchell Reports” on msnbc

Benjamin Jealous, president of the NAACP

While watching tonight's preview, take a listen to tonight's soundtrack.

Executive producer Bill Wolff shares a preview of tonight's show: