i think southern california really, you know, is a great orboratory, if you will, f cross-racial learning and meaningful interaction. host: as we wrap up our program, tell us about you. you're the city director of a race and equity center at the university of southern california. what does your organization do? guest: we bring together researchers from across the university, more than 100 professors at usc who study race, racism, immigration, people of color, racial interactions and so on. and our aim is to be helpful to the nation as we continue to grapple with racism, and help people understand that racism is not just tiki torch carrying white nationalists or kkk members in white hoods, but racism is also historical, structural and his stomach. that is the kind of -- systemic. that is the kind of racial understanding that i think many of the people who called in this morning and too many americans across the country seemingly lack, and our aim is really to educate the country on those very complicated, complex representations of racism. host: dr. shawn harper, university of southern cal