The Florida Supreme Court granted a new “stand your ground” hearing to one defendant and denied the claim of another Thursday as it settled questions on whether a 2017 law should apply retroactively. The law shifted the burden of proof in stand your ground pretrial immunity hearings from defendants to prosecutors. Florida first enacted a stand your ground law in 2005, giving immunity to people who use deadly force to protect themselves or others if they feel at risk of great bodily harm or death.