regardless of the reasons black people overall might commit more crime, or whether they actually commit more crime or are just singled out by police more often, do you feel that this is relevant to how often police kill people?

Capital punishment is the mechanism through which the justice system has the right to kill people for their crimes. Cops do not have the authority to decide who is guilty, let alone what their punishment will be. Therefore I ask again, how is the crime rate of black people (even if that number is taken in good faith and not heavily questioned as any competent statistician should) relevant when we are discussing how often officers murder black people, before a court has decided whether they have actually committed a crime or not?