Supporters of Sen. Bernie Sanders booed today as the former Democratic presidential contender told them, “We must elect Hillary Clinton.” He was appearing for the first time this week in Philadelphia, where the Democratic National Convention is set to kick off later today. Addressing a group of his delegates at the Pennsylvania Convention Center, Sanders spoke broadly about his accomplishments during the primary battle. However, when he said that Hillary Clinton — his primary season rival who is now the presumptive Democratic nominee — must be elected, the crowd began booing. Attempting to take back control of the room, Sanders said, “Brothers and sisters, this is the real world that we live in,” and argued that Donald Trump is too “dangerous.” From there, the crowd began chanting, “We want…
