The US has far too may police shootings for one publication to report on all of them. There has to be some way of selecting out those that appear to be worthy of interest, and therefore of reporting on. When the person shot is unarmed, that is worthy of interest. When the person shot is a child or a woman or a foreigner, that is sufficiently unusual that it is likely to be worthy of interest. When the person shot is an unarmed foreign female, that is definitely worthy of interest.