Using 2011 population data from the U.S. Census Bureau, 2011 crime statistics from the FBI and information from 17,000 local law enforcement agencies in the country, it came up with a report titled Top 25 Most Dangerous Neighborhoods in America. ( <a href="http://tinyurl.com/cdqrev4">http://tinyurl.com/cdqrev4</a> ) They include neighborhoods in Detroit, Chicago, Houston, St. Louis and other major cities.what is common to all 25 neighbo