The CNN host said the rapper is being "exploited" and "needs help."
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The first film was Marvel's highest domestic grossing film in history.
An analysis this week found 70 percent of the people affected by the practice were black.
Brennan Walker said he was looking for help after missing a bus to school. Jeffrey Zeigler fired a shotgun blast at him.
"It just brings us all a bit closer together and we recognize each other within each other," the actor and rapper said.
His words reflected a "victimized mentality," he told Donald Trump at the White House.
Kaepernick scored an ad campaign with Nike after starting a movement to protest how black people are treated in the U.S.
A woman called the cops on a black baby sitter while he was taking care of two white kids.