“Slaves are generally expected to sing as well as to work.” Abdul-Jabbar wrote, adding slaves had to sing their “oppressor’s feel-good songs” as well. He wrote that the “Star-Spangled Banner” is the song that President Trump – the oppressor – is demanding to be sung. “Currently, the song being demanded is the national anthem during football games. But during a warm-up game on Aug. 10, despite President Trump's previous condemnation, several Eagles players kneeled during the anthem or raised their fists — their way of singing their own song,” he wrote.