Joe Biden became the first sitting U.S. president to visit the Tulsa, Oklahoma site where hundreds of Black Americans were massacred by a white mob in 1921. #News #Reuters #JoeBiden #Tulsa Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en