Most politicians are white and male, let's get that up-front. Representation in this country right now doesn't demographically align to either the number of women, nor does it hew to racial populations. There are lots of reasons for why our representation doesn't match demographics, including who even attempts to throw their hat in the ring! And if fewer women or POC's do, well, there's part of the problem--but you can't even point that out without addressing real barriers in getting party support, financial backing, and favorable news coverage when there is perceptible bias.
What O'Reilly did though, was, instead of playing the recent Jedi mind-trick of saying "This is not the White Privilege you seek", actually full-on admitted that the cultural establishment in the US is a white one. The whole notion strikes me as quaint--when I see the above, I think of this:
As far as "adducing statistics" goes, I also can't help but think of this. And the basis of voter ID laws. O'Reilly is explicitly saying that the establishment of this country is about white people and needs to stay that way. I don't know how to see that as anything other than saying that democracy shouldn't be representative or small-"d" democratic, but support a certain class (race) of people. Which is all white by O'Reilly, but alt-right, if not neo-Nazi by me.
I do not understand why this is not more called out as absurdly biased. It genuinely is.