I don't think so. You want to see a black guy REALLY offended by another black guy? Ask him what he thinks of Clarence Thomas, Thomas Sowell, or any other openly conservative black. As long as Obama remains a redistributionist, he can kill and devour a baby on live network TV and they will still vote for him.
Well, it goes without saying that most blacks are politically aligned to the left. They're conditioned to despise any conservative or Republican, but yes, many of them reserve a special degree of animosity for black conservatives. This we know.
My point is, Obama has lost a great deal of support across all demographics, but especially among blacks. I won't go into all of the reasons why again, but just remind you that blacks trusted and supported him more than any other Americans.
Consequently, their degree of loss and sense of betrayal is deeper than any other group on the left. Obama's endorsement of gay 'marriage' was the final straw for those people who were already feeling used and betrayed by him.