Pakistan: Safety is returning to Karachi

Security operation is transforming city of 20 million people once known for violent crime.

Pakistan‘s most populous city is enjoying a new lease of life.

Ten years ago, Karachi was known for its violent crime.

There were regular targeted killings and extortions, and many businesses were forced to shut down.

Then a major security operation was launched to tackle the problem.

Al Jazeera’s Kamal Hyder reports from Karachi.