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Ahead on the 5/7 Maddow show

Tonight's guests include:Detective Jennifer Ciaccia of the Cleveland Police DepartmentDr. Todd R. Clear, dean of the School of Criminal Justice at Rutgers

Tonight's guests include:

Detective Jennifer Ciaccia of the Cleveland Police Department

Dr. Todd R. Clear, dean of the School of Criminal Justice at Rutgers University

Sen. Claire McCaskill, (D) Missouri, member of the Senate Armed Services Committee

Here's tonight's soundtrack.

And here's executive producer Bill Wolff with a preview of tonight's show: