...thats why the op is asking for examples of actual black entrepreneurs, so that what will actually happen is, when presenting a list of entrepreneurs as examples, at least some of them are black, and the kids are not explicitly or implicitly told that there are no black entrepreneurs. You seem to be arguing that presenting a list of white examples would not prompt stereotypes in itself, and I think you really need to show that instead of simply assume it.

Yeah, that makes sense. I was thinking along 'companies started by african-americans' as the presentation context, which carries the subtext of blacks as the exception.