Primary source is Gizmodo (<a href="http:&#x2F;&#x2F;gizmodo.com&#x2F;mark-zuckerberg-asks-racist-facebook-employees-to-stop-1761272768" rel="nofollow">http:&#x2F;&#x2F;gizmodo.com&#x2F;mark-zuckerberg-asks-racist-facebook-empl...</a>), but Gizmodo submission is heavily linkbait.