Racial bias tainted the decision to strike Black people from the jury pool and to impose the death penalty in the 2009 trial of a Black man in North Carolina, a judge ruled on Friday, part of what he called “glaring” patterns of bias in a prosecutorial district outside the capital. Hasson Bacote was among a group of 15 death row inmates whose sentences were commuted to life without parole last year by Gov. Roy Cooper in one of his final acts in office.