Trump is in a tight spot. If someone tried to cut into his black support, there is no better way than to make it look like he is being mean to a black woman that worked for him.
This was a planned operation.
Will it cause damage? Most attacks have been turned on the attackers so far.
No it won’t damage him. Omarosa is a nobody. Trump goes after NFL and NBA stars and still has a 20-30% approval among black voters.