The late, great writer and reporter Michael Kelly was a guest on my radio show almost weekly from its debut in July of 2000 through his death outside of Baghdad in April 2003. So was Christopher Hitchens—more than 70 times in fact—until his death in late 2011. Kelly always emphasized that journalism was a “craft,” not a profession and Hitchens that it was very much a moral crusade. I think it is both, and more. It is part of a functioning, free democratic Republic, and its practitioners must not be intimidated. The very best journalists—those who go to the front...