“Still lingering in the Lousiana state constitution is a 120-year-old measure put in place to suppress the rights of African Americans: non-unanimous juries. Louisiana is one of only two states — the other is Oregon — in which a person can be convicted of a felony and sent to prison without a unanimous vote of the jury. As a result, Louisiana prosecutors do not truly have the burden of proving their case “beyond a reasonable doubt.” They only need to persuade 10 of 12 jurors to send a defendant to prison, even for life.”