Michelle Obama says she "can't make people not afraid of black people," but can "pick away at the scabs of discrimination" through her life's work. "As people doubted us coming through — 'Are you Princeton material? Can you really make the grade?' Can you cut it?' — what do you do in those instances? All you can do is put your head down and do the work and let the work, your truth, speak for itself," the former first lady said Tuesday at the Obama Foundation Summit in Chicago. "I can't make people not afraid of black people. I don't...