As Democrats campaign for the Nov. 6 midterm elections, they have plenty of legitimate criticisms to level at President Trump and Republicans who control the House and Senate. But Democrats were hurt in recent days by amazing and disgusting comments made by Hillary Clinton and former Attorney General Eric Holder. As a Democrat, I want my party to win as many seats as possible in the House and Senate and to capture as many governorships and other state offices as it can. But the Clinton and Holder remarks do not advance that effort – they hurt it. Former Secretary of...