It's been proven (in mock trials) that black jurors are extremely biased depending on the race of the defendant. They're loathe to convict their own and eager to put whites away. Of course this was inconvenient to the authorities so the results were dismissed, but it proved what any white person with common sense already suspected. A single black juror increases conviction chances for whites by a large amount, regardless of circumstances or evidence.

It's been proven (in mock trials) that black jurors are extremely biased depending on the race of the defendant. They're loathe to convict their own and eager to put whites away. Of course this was inconvenient to the authorities so the results were dismissed, but it proved that any white person with common sense already suspected. A single black juror increases conviction chances for whites by a large amount, regardless of circumstances or evidence.