However, I do believe that there is very little time, effort or cash being spent in recruting these to become donors.
The reflection of statistics is obvious to me that more resources have been put toward collecting donors for the white community. Not an unwillingness to help by people of color.
That is almost certainly a big factor. Most donor collection activity is concentrated in the workplace, particularly in higher-end companies. Probably many low income workers are isolated from these efforts - probably we have as many black donors as other races where I work.
On a related subject, what research and progress has recently been done on sickle-cell anemia? I thought I read once that this is unusually common in both black and european jewish bloodlines and that it was enhanced by close blood relationships and inheritence.