Racial biases are well documented. With regard to crime, for example, one recent controlled experiment using a video game simulation found that white college students were most likely to accidentally fire at an unarmed suspect who was a black male — and most likely to mistakenly hold fire against armed white females, reports Sociological Images:
“More abstractly, people generally overestimate the risk of criminal victimization they face, but whites are more likely to do so when they live in areas with more black residents.
“The difference in racial attitudes between white men and women are limited. One analysis by prominent experts in racial attitudes concluded that “gender differences in racial attitudes are small, inconsistent, and limited mostly to attitudes on racial policy.” However, some researchers have found white men more prone than women to accept racist stereotypes about blacks, and the General Social Survey in 2002 found that white women were much more likely than men to describe their feelings toward African Americans positively. (In 2012, a minority of both white men and white women voted for Obama, although white men were more overwhelmingly in the Romney camp.)
“What about juries? The evidence for racial bias over many studies is quite strong. For example, one 2012 study found that in two Florida counties having an all-white jury pool – that is, the people from which the jury will be chosen – increased the chance that a black defendant would be convicted. Since the jury pool is randomly selected from eligible citizens, unaltered by lawyers’ selections or disqualifications, the study has a clean test of the race effect. But I can’t find any on the combined influence of race and gender.
“The classical way of framing the question is whether white women’s group identity as whites is strong enough to overcome their gender-socialized overall “niceness” when it comes to attitudes toward minority groups. But Zimmerman’s lawyers appeared to be invoking a very specific American story: white women’s fear of black male aggression. Of course the “victim” in their story was Zimmerman, but as he lingered over the shirtless photo, O’Mara was tempting the women on the jury to put themselves in Zimmerman’s fearful shoes.”