If we occur to ourselves accurately as resourceful, we may find ourselves in fairly high-stakes or high-risk situations with a sense of plenty that makes a mockery of binaries like upward-versus-downward mobility.
There may be some reasons not directly attributable to racism that explain the downwardmobility of blacks, the decline in union jobs for example, but they are not the reasons proffered by Lexington.
According to the OECD, the US has the distinction of being the only industrialised country where the next generation is not going to be better educated than the previous - in a form of educational downwardmobility.