They first one is a good article. I have my critique, but it is good. I don't think it contradicts what I've been saying, though. It concludes:

… none of this is to suggest the literature or the racial capitalism concept should be renounced. There are tensions but these are productive tensions. This counsels that we should embrace rather than overthrow the racial capitalism concept. … [T]he problematic it opens up is far too important to ignore.

As for the second, I can't say much until I've dug up more than the abstract but I'll say that while Robinson's work is a good place to start, I'm arguing in the vein of a different tradition, which centers Fanon not Robinson.

Anyway, thanks for the sources. I'm always open to reading more about the concept of racial capitalism.