[contentcards url=”https://www.usatoday.com/story/opinion/2017/11/27/clinton-ponders-2020-run-lets-not-forget-her-real-libya-scandal-glenn-reynolds-column/895853001/” target=”_blank”] Black Africans are being sold in open-air slave markets, and it’s Hillary Clinton’s fault. But you won’t hear much about that from the…