The black-on-white crime thing is a myth that has circulated in white supremacy circles for decades. Please consult FBI statistics for your figures on this. As for the raw number (as opposed to percentage) of different races killed, that hides the fact that blacks are 2.5 times more likely to be killed by police than the rest of the population. https://www.splcenter.org/20180614/biggest-lie-white-supremacist-propaganda-playbook-unraveling-truth-about-%E2%80%98black-white-crime