There are plenty of second order effects that may ultimately be caused by racism that would be beneficial to look for. For example, there are large populations of black people in rural areas like Alabama and Mississippi as well as large populations in high-density cities like New York and LA where they are much more likely to experience high levels of air pollution. There are historical reasons why black people would experience higher levels of air pollution, even amongst people living in the same city, but by segmenting the groups like that you can try to find a connection to air pollution and if that is the case, that changes out understanding of the effects of urban planning and we can make actionable changes from that. That to me sounds like a better outcome, then whipping ourselves about how bad racism is, a topic the people who care about that kind of thing are already aware of.