You only need one to hang up the criminal jury. You need at least 3 to tie up a civil jury. It takes only one to block conviction, but in a civil case, it takes at least 3 to block, and that's if the jurisdiction uses the 10 of 12 jurors required.
Given the reasonable doubt standard, finding one juror who will hang it up will not be a problem, unless they just happen to get all the jurors from the OJ trial.
and all those jurors were black except one very weak, mousey woman who admitted she thought Simpson guilty but couldn't stand up to the others.....if she had, it would have been a hung jury and Simpson would have been tried again...
I don't worry about a Durham jury convicting, because all won't vote to convict. But I can see one or two stubborn racist jurors holding out to purposefully cause a mistrial, and deny the white suspects an acquital.