While I get the point, the fact that we disregard the lynchings of white, American Indian Chinese Americans, etc., skews the issue, perhaps in an effort to minimize our own perceptions of the barbarity of our culture. (Another problem is that, for decades, all white Americans have been held responsible for the crimes of people who lived long before any members of our families even came to the US. Collective, race-based blame.) Modern justice, such as it is, is clearly based on class/economic status. In America, you get whatever justice you can afford. Police presence (oppression/abuses) is focused on areas of concentrated populations. Poor black people today largely live in concentrated urban areas, the result of moving to low-rent districts in pursuit of manufacturing jobs during the 20the century. The majority of our poor are white, and poor white people are widely scattered, living in the vast areas between the major cities, making them poor "targets" for police. This generation is intensely class-based, where even our "bold progressives" wave the banner for the bourgeoisie alone.
My point is that by concentrating only on race, we are able to narrow down our perceptions of America's warped justice and our brutality, shifting the blame to a comparatively small group of white men rather than recognize just how primitive our mainstream culture actually is.