Child's play.
If he really wanted to up the ante, he would have boycotted playing in the cities where black men have been shot until prosecutors pressed charges against the police who shot them.
THEN we'd see change.
Similar action occurred in a university (Michigan?) where racism ran rampant. The football team (mostly black) boycotted playing. The town stood to loose MILLIONS. The Dean ultimately had to resign. Eventually, black people will realize their power will come in the form of green backs and not from marching, chanting or demanding respect/integration/etc. It's about building your own business, circulating those dollars among your own people, creating your own media, art, policing your own neighborhood, electing officials who will serve your interests, hiring each other, and on it goes. Owning and controlling.
It worked for Asians, Jews and recently, Latinos, who this month, bought Trump (of all people), lock stock and barrel!