The data that I have seen shows that Black people are grossly under-represented among the fully vaccinated people and among the people that have received one dose. For instance, in my state, California, that has about 5% Black people, the percentage of vaccine doses administered to Black people was estimated at 3%. The discrepancy is much worse in other states. For instance, Delaware has injected just 9% of black people when they make up 22% of the population.

The numbers I am using are taken from
https://www.kff.org/coronavirus-covid-19/issue-brief/latest-data-on-covid-19-vaccinations-race-ethnicity/

We have heard about Black reluctance to vaccines because they have been used as guinea pigs in the past. Are there any other factors at play here also?