We have juries who refuse to convict because of the consequences to the defendant.
I sat on a carjacking/rape case where we convicted the creep. He had been acquitted of the same type of crime 2 weeks before committing the one we convicted him of.
Two jurors were hesitant to vote guilty, because the young (24) man might spend 20 years in prison. But, we persuaded them that possession of the victim's car and the gun she described within an hour of the assault and eyewitness identification was proof enough that he was the guy who committed the crime.
When I was able to tell them about his prior, which had been in the local paper, they were flabbergasted. They said we wouldn't have needed to convince them to vote guilty had we told them about that!
Go figure!