I disagree.  Nobody has yet made a case against the inclusion of statistical data when it’s used in support of a discussion about causal theories, which in this case it would be.

I recommend that people take a look at how this issue is handled by other, similar Wikipedia articles, particularly Race and intelligence, which has been at least as hotly contested as this one.  Although the focus of that article is on the various explanations that have been proposed for this IQ difference, the IQ difference itself is considered central enough to the article that it’s represented visually in this chart.  This image used to be part of the article also—it was eventually removed because editors decided that it was original research, but nobody there had a problem with the idea of this data being depicted with an image.

The original research claim obviously doesn’t apply to an image from the DOJ website, and I think all of the same principles that apply to race and intelligence apply here also.  The only question that needs to be considered is whether the data represented in the image is relevant to the article, which in this case it clearly is.