This is a website that has some great information to be viewed. Instead of re-writing this article, I am going to post quotes from this site to show the necessary information.
“Some 90 percent of false convictions in the rape cases involved misidentification by witnesses, very often across races. In particular, the study said black men made up a disproportionate number of exonerated rape defendants.”
“The study identified 199 murder exonerations, 73 of them in capital cases. It also found 120 rape exonerations. Only nine cases involved other crimes. In more than half of the cases, the defendants had been in prison for more than 10 years.”
“In 88 percent of the rape cases in the study, DNA evidence helped free the inmate. But biological evidence is far less likely to be available or provide definitive proof in other kinds of cases. Only 20 percent of the murder exonerations involved DNA evidence, and almost all of those were rape-murders.”
“The racial mix of those exonerated, in general, mirrored that of the prison population, and the mix of those exonerated of murder mirrored the mix of those convicted of murder. But while 29 percent of those in prison for rape are black, 65 percent of those exonerated of the crime are.”
"The most obvious explanation for this racial disparity is probably also the most powerful," the study says. "White Americans are much more likely to mistake one black person for another than to do the same for members of their own race."
“A separate study considering 125 cases involving false confessions was published in the North Carolina Law Review last month and found that such confessions were most common among groups vulnerable to suggestion and intimidation.”