By Madison Williams “You should be ashamed of yourself, if you are in a position of power,” the former Duke coach said. Editor’s note: This story contains details of a mass casualty event and gun violence. Former Duke basketball coach Mike Krzyzewski recently expressed his thoughts on gun reform in America following last week’s mass shooting at Robb Elementary School in Uvalde, Tex., which left 21 people dead including 19 children. Coach K held a public viewing of his latest SiriusXM radio episode at Cameron Indoor Stadium’s Champions Club on Thursday night. During the discussion, he brought u…