Attorney General Eric Holder is in Paris this week to attend a meeting on fighting terrorism, but did not participate in a march with world leaders Sunday to honor the 17 people killed last week in France. More than 40 world leaders marched arm in arm through Paris to rally for unity and freedom of expression and to honor the victims of the three days of terrorist attacks. The leaders headed a demonstration of at least tens of thousands of people who converged on the capital after three gunmen last week attacked a newspaper office, kosher supermarket and police. Among...