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Ahead on the 9/17 Maddow show

Tonight's guests include:John Stanton, Washington bureau chief at BuzzfeedCapt. Mark Kelly, co-founder of the gun safety group “Americans for Responsible

Tonight's guests include:

John Stanton, Washington bureau chief at Buzzfeed

Capt. Mark Kelly, co-founder of the gun safety group “Americans for Responsible Solutions” and husband of former Rep. Gabrielle Giffords

Here is tonight's song - and here is executive producer Bill Wolff with a preview of tonight's show: