You don't think black leaders are already doing that, and have been forever? You defeat racism by defeating racists: removing their power to advance their ignorant agendas.
Your are assuming that there is someone in power or large numbers who has/have an agenda of racism. Who is? Have you ever seen any sane person who,for example, disagrees with the notion that Black Lives Matter? Some people may argue that there are other lives that matter as well, but no one seriously disagrees that Black Lives Matter.