One of those charts, despairing over the number of blacks in Congress, was just dumb.
Another large number are the direct result of the dysfunction of the black population. For instance, the huge proportion of single mothers, not racism, directly causes most of those issues, such as the proportion of households being in poverty.
Some are based on demographics such as location distribution. If a greater percentage of black people live in urban areas, then that's going to contribute to a smaller percentage being homeowners