His books ranged from "Negro Politics: The Search for Leadership," published in nineteen sixty, to "The Marriage Problem: How Our Culture Has Weakened Families." That book came out in two thousand two. He served on a number of national and presidential commissions. And in two thousand three President George W. Bush awarded him the Presidential Medal of Freedom.

James Q. Wilson died on March second at a Boston hospital. He had been receiving treatment for leukemia.

BOB DOUGHTY: Policing methods continue to evolve and change. New technology continues to be one of the biggest trends in law enforcement.

Tod Burke is a professor of criminal justice at Radford University in Virginia. He says improved crime mapping is a big help for police.

TOD BURKE: "This is taking police officers and placing them in the area where they’re really needed. This becomes critical particularly as resources and finances are problematic in many law enforcement departments across the United States, and probably throughout the world."

There are thousands of law enforcement agencies at the local, state and national level in the United States. Today improved CompStat systems are helping to connect departments across the country to share information.

FAITH LAPIDUS: Surveillance cameras are a method of policing widely used in Britain. Cameras are also increasingly used by police in the United States. The trend has spread, especially in busy areas and areas with large populations, like New York.