I'd seriously doubt its literal. I would interpret it as symbolic - especially since he is coming from a religious perspective.

It would most likjely be related to pride, indentity etc.

I can see that would piss off a few whites, but oftentimes one of the ways a disadvantaged/downtrodden/dsenfranchised group can maintain a sense of pride in themselves is by reaching back to their symbolic roots.

I'd seriously doubt he hates America - although like many churchmen in mainstream churches he may be very critical of the 'dog eat dog' ideology of the nation.

And refusing to be blinded by patriotism is hardly a bad thing.