For more than a century, Harlem has been one of New York's most densely populated districts. And while it has always been a magnet for African Americans, it has also been one of the city’s poorest and most crime-ridden areas. Today, Harlem is experiencing an economic surge largely due to an influx of outsiders attracted to its plentiful housing and a growing black middle class. But as VOA’s Adam Phillips reports, the trend comes with a price.