How might a Kantian deontologist evaluate a jury voting to convict someone they know is innocent because they disagree with his political beliefs?

• It is morally right because juries decide legal truth and can't be punished for any decisions they make.
• It is morally wrong because if their motives are obvious, it could hurt their own party's reputation just to prevent just one person from voting against them.
• It is morally right because the jurors' obligation to their party and their country are more important than one innocent man's freedom.
• It is morally wrong because if all juries acted that way, the judicial system would cease to be about justice and become a vehicle for political oppression.