You wouldn't dig into those statistics if your life depended upon it. What sorts of homicides, for instance, are more likely to result in death sentences? I would invite you to examine a racial/ethnic breakdown of homicides involving home invasions, for example.
Man, you know, even worse than the national conspiracy by police, prosecutors and judges to oppress black people, I think we first need to get a handle on the national conspiracy to oppress men, who make up 49% of the population yet make up 90+% of the prison population. How unequal! How unjust! What clearer numerical example of discrimination have we than this sobering statistic!