Will it be easier to persuade people that Barack Obama is wrong on the issues or to try to convince them that he is outright evil? That’s a crucial question facing conservatives as we gear up for fateful election battles in 2010 and 2012. Based on human nature and political history, the answer to that question ought to be obvious: Americans have often felt that our leaders make mistakes or pursue destructive policies but we have rarely (if ever) believed that they did it deliberately to damage the country. In the last 80 years, Herbert Hoover, Gerald Ford, Jimmy Carter...