<a href="http://www.nj.com/union/index.ssf/2015/11/twitter_account_threatens_to_kill_black_students_a.html" onclick="window.open(this.href, '', 'resizable=no,status=no,location=no,toolbar=no,menubar=no,fullscreen=no,scrollbars=no,dependent=no'); return false;">NJ.com </a>identified the Twitter user as @keanuagainstblk  In recent weeks, the University of Missouri cin Columbia, Mo.,has seen several racially-charged demonstrations that have engulfed the school in controversy.