A US magazine 'Foreign Policy' has termed Karachi "the most dangerous megacity" in the world.
In a piece on Karachi's role in the global trade of methamphetamine -- an illegal psychostimulant -- Foreign Policy cited a murder rate of 12.3 per 100, 000 residents, "some 25 percent higher than any other major city".
Commenting on the recent pace of change in Karachi, the report states:
"From 2000 to 2010, Karachi's population grew more than 80 percent. That's roughly equivalent to adding more than New York City's entire population in just a decade."
The article says that "gangs tied to political parties have long operated in the poorer parts of the city, running extortion rings and land-grab schemes", asserting that these factors have helped turn conditions in the city to one of the most fertile hotbeds for meth trade.