Earlier quoted context omitted.
As I understand it, you have to be OK with the death penalty, to be on a capital jury.
This in and of itself very likely creates a bias against the defendant. For me, there is overwhelming evidence that many innocent people have been executed. To support the death penalty, you seem likely to either not believe in systemic injustice (which means you are also probably more likely to believe flimsy testimony) or accept that innocent lives are a tolerable tradeoff to ensure that some people are executed fo…
In practical terms, it also requires an incompetent lawyer. Ruth Bader Ginsberg said "No well defended person receives the death penalty." I read that in an article about the one isolated case where she was wrong.
I also suspect that the death penalty corrupts the societies that use it.