Which is why a functional test is whether the protected group can choose their candidate of choice in the Democratic primary. If the group you are protecting is Hispanic or Asian, then not only do you have to keep their CVAP high, you need to keep that of the BCVAP as low as possible.
And how is that supposed to work, exactly, when some voters are both black and Hispanic? That is probably most salient in Charlie Rangel's current district, which has many black Hispanics from the Dominican Republic (though some might not be citizens).