During the Hurricane Harvey catastrophe Melania Trump ignited a media firestorm for wearing stiletto heels on her way to Air Force One. Yes, she changed to sneakers when she arrived in Texas but many questioned such a pronounced focus on fashion on a day when she was to visit with people who had lost everything to the floods. When I saw video of the First Lady walking from the White House to the helicopter that would whisk her to Andrews Air Force Base, I immediately lost interest in these theoretical — be they political or feminist — critiques. Instead, I was fascinated by her gait. Our feet, usually hidden in shoes, are an underappreciated part of our bodies.…