http://www.newsweek.com/sheryl-sandberg-criticized-downplaying-facebook-role-us-capitol-riots-1560807 > Facebook's chief operating officer, Sheryl Sandberg, has provoked criticism after attempting to downplay the role that the social network had in last week's riots at the U.S. Capitol building. > Five people lost their lives in the violence, which was instigated by supporters of Donald Trump following the March for America protest organized and coordinated on an array of social networks, including Facebook, Facebook-owned Instagram and Twitter.