WQED on Instagram: "On May 8, 1970, students protesting the Vietnam War gathered on the steps of New York City's Federal Hall. What happened next revealed America's great divide and shaped the political and cultural landscape for decades to come. @AmericanExperiencePBS presents the clash over Vietnam that swung blue collar workers to the right. HARD HAT RIOT premieres September 30 at 9/8c on WQED. #HardHatRiotPBS"