Why are most newspaper reporters and editors liberal? I've been working in the business for more than 20 years, and I can't give a quick, definitive answer to the question. But I do think a contributing factor is that editors, like other managers, tend to hire and reward staffers who think as they do. They see their positions as neutral, which is human nature - and is reinforced by the fact that the folks in the desks around them vote the same way they do. When they read about complaints of media bias, editors write the criticism off because they...