[seren]

Could be a bug. If you look at wikipedia for a category american inventors

https://en.wikipedia.org/wiki/Category:American_inventors

There is a sub category called "African American inventors". Since the sub category also match the search terms, it is possible that for some reason they are displayed in priority.

edit : the post of econ4all about "us+inventor" tend to confirm that it is an issue with "american" being part of "african american"

[tdb7893]

Also there's the fact that lists of famous African Americans are probably more common than general lists of famous Americans (and many will appear on both lists). The bias here seems pretty obviously to align with a general bias to what people put on the Internet. The funny thing about the position they are in is that there is no way to make everyone happy seeing as there doesn't seem an objective way to judge bias so it's inherently subjective.