Those numbers conflate "ever sold" with "sold in the last N days", and yearly vs. weekly usage rates. For regular usage (which would be expected to track sales

Those numbers conflate "ever sold" with "sold in the last N days", and yearly vs. weekly usage rates. For regular usage (which would be expected to track sales, and possession) the numbers are substantially higher for blacks. http://slatestarcodex.com/2014/11/25/race-and-justice-much-more-than-you-wanted-to-know/ http://slatestarcodex.com/2014/11/25/race-and-justice-much-m... Is a good meta-analysis, which on this particular data point leads to: http://www.bjs.gov/content/pub/pdf/rdusda.pdf http://www.bjs.gov/content/pub/pdf/rdusda.pdf And in the OP's substantive point about "violent crimes", the FBI's crime stats prove them definitively correct.