Hundreds of DNC protesters gathered outside hotel where delegates are thought to be staying

Last night: Hundreds of DNC protesters are now gathered outside a Hilton hotel where delegates are thought to be staying. And the convention hasnt even started yet. This could indicate that a civil war is unfolding within the Democratic Party regarding the choice of their nominee. Is there an an actual chance that Kamala Harris could be publicly removed. Some are speculating. Who are these protesters affiliated with?