I was REALLY pissed off about the verdict when it happened, but when I look back at how things went, it seems that the police and the prosecution made a number of VERY serious mistakes that undermined their case. Some of the evidence was collected in a pretty slipshod way, and one of the senior police investigators was a man who turned out to have a history of racist remarks and at least a few possible racist acts. I don't know much about criminal law, but it seems that if you're dealing with a case where there aren't any eyewitnesses, if your forensic evidence and the police investigators both have problems with their credibility, then the entire case is tremendously weakened. The whole "glove incident" just made things worse. If, in place of Mark Fuhrman (sp?), there had been an officer with no skeletons in his closet, and if the evidence had been handled with the greatest care so that there was no plausible way that it could have been contaminated or altered, then I think that a conviction would have been likely no matter what the backgrounds of the people on the jury.
BTW, I don't think it was an all-black jury. If I remember right there were Hispanics and Asians on the jury, and 1 white.