Your argument is really disingenous, you're trying to imply the policy is racist due to the fact it'll affect more African Americans.

Well, if the policy was aimed at a property a particular group can't change or easily change (e.g. entry to the club only if your income is higher than $100K, or your postcode is X (where X = the white area of town)), then it is discriminatory. But here the choice to be admitted or not is easily changed by any individual, by choosing to be vaccinated or not.