“Subliminal” and “deeply-rooted, latent racial bias” is utterly meaningless without objective criteria.
In past, courts have ruled that jurors have very wide latitude to determine guilt or innocence, and that bias must be blatant, obvious and expressed as such to sway the outcome.
In fact, grounds for a mistrial *based* on such bias is such that those jurors can be held in contempt for their actions, which means their expressions must be beyond doubt.
When you serve as a judge or a juror you have to set all that aside.
You must judge any particular case based on the evidence presented and the law.
Nothing else.
Unless you and other jurors do a jury nullification of a law.