Bernie Sanders addresses the Democratic National Convention on its opening night. So does progressive favorite Massachusetts Senator Elizabeth Warren and Michelle Obama. Sanders supporters marched in the hot sun ahead of the convention’s opening, chanting protests against the Democratic National Committee and its outgoing chair, Florida Congresswoman Debbie Wasserman Schultz. The Sanders supporters are angry over the evidence revealed in leaked emails that DNC officials discussed among themselves how to defeat Bernie Sanders during the Democratic primaries. Sanders supporters are also unhappy about Hillary Clinton’s choice of Virginia Senator Tim Kaine as her running mate, calling it an assault on the progressive base of the Democratic Party. They say Kaine has been wrong on issues ranging from advocating the use of coal, to the Trans Pacific Partnership trade deal, right to work laws and tax rates for the wealthy.