"Have you no sense of decency, sir?" These words rang out in a Senate subcommittee hearing in 1954 from the U.S. Army attorney, Mr. Joseph Welch, signaling the beginning of the end of Senator Joseph McCarthy's witch hunt aimed at anyone suspected of even knowing a Communist. Eventually censured by the Senate, McCarthy became a pariah because he fell into a trap common to people who become passionate about an agenda. They become so busy storming the walls of their enemy's fortress that they forget to ask, "Is this the right wall?" or "Is this the right fortress?" or even...