What, did you think we couldn't google? 
Even with your recast of the issue (cf. RT, supra), you might be able to argue blacks are not terribly disproportionate among Hotel workers in general, because hotel managers (a fairly large portion of the overall hotel workforce) are overwhelming white.  But that would sorty of make the point for us, wouldn't it?  
And if the RNC head said Dems couldn't fill a room with black supporters, I'd say he was a moron engaging in yet more conservative wish-think.  But, given what we here you guys argue here, I'd say we just might hear it sometime.