Through the Wormhole, Season 6 (2015)

Morgan Freeman:
  Does this mean that white Americans are inherently bigoted?  An utterly shocking trend with Josh's black participants suggests that it's much more complicated than that.

Josh Correll:
  We see that black participants show the same anti-black bias that white participants do.  Actually, when we test to see if there's a difference in the two groups, white participants versus black participants, they're not statistically different from each other.  So, we think this represents an awareness of a cultural stereotype, not that our participants believe, necessarily, that black men are more dangerous than white men.