Nothing unites Democrats more than a deep belief that President Trump must be driven from office. And right now, nothing divides Democrats more than finding the best way to bring this about. Trump’s racist tweets over the weekend against Rep. Elijah E. Cummings and the city of Baltimore that is part of the dignified Democrat’s district only underscored the moral urgency of ending a presidency that, day after day, brings shame upon our nation. Trump is not a political genius. He is president because of our outdated and undemocratic electoral college. What he is skilled at is taking advantage of...