“Hopefully this will translate to votes.”
Ironically it helps him with the white vote, as moderates want to see Republicans trying to help blacks, rather than trying to enslave them (as the Democrats basically claim).
Blacks, of course, are also responding. They know instinctively that Trump really does care about them (i.e., no one ever claimed he was a racist until he got into politics), but I suspect a lot of blacks aren’t so sure that the Democrats love them for more than just their votes.
I think a lot of them do occasionally, but regard their pottage as enough to put such unpleasant thoughts out of their minds.