http://www.nytimes.com/2008/08/04/nyregion/04critical.html?ref=nyregion&pagewanted=print
The New York City Police Department, with its 35,000 officers, has in recent years been on the front lines of the citywide decline in serious crime. It has protected visiting dignitaries like Pope Benedict XVI at events that drew thousands of people, and it has posted officers in foreign capitals to gather information on terrorism and trends that could threaten New York.
But the Police Department continues to be flummoxed by bicyclists riding together once a month.