What is even more striking - the PG County population is roughly 2/3 black. That's supposed to be Obama's core constituency, it's why he was invited to speak. In 2014 nobody invites him to speak to white voters. Reuters writes:
A steady stream of people walked out of the auditorium while he spoke, however, and a heckler interrupted his remarks.They know how to hurt his feelings. How the mighty have fallen.