Just as soon as Kamala Harris' presidential campaign began nearly four weeks ago, so too did the ugly, age-old racist attacks, with Donald Trump questioning his rival's race in a sit-down interview with Black journalists. Bianna speaks with Randall Kennedy, a law professor at Harvard, and an expert on the history of race and politics. 

Also on today's show: Raj M. Shah and Christopher Kirchhoff, co-authors of “Unit X: How the Pentagon and Silicon Valley Are Transforming the Future of War”; Ahmad Sarmast, founder and director of the Afghanistan National Institute of Music 

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