Actually, Charlottesville, Virginia is more like a large town.  But over two days in August 2017, that community became the focal point for tens of millions of viewers.  What happened over that 48-hour period showed social platforms at their best and at their very worst.  It remains an informative case study. For a number of months prior to that August period, racist supremacist groups had used Facebook, Twitter and YouTube to quietly organize and recruit supporters for an important event that became the Charlottesville riots.  Jason Kessler, a white supremacist leader, had been using a Facebook page as a rallying call for months.  To be sure, the leaders of the movement attempted to put the best face forward on social media, while they worked away behind the scenes at…