Technically speaking, Orangi is a katchi abadi and :
Karachi: Alleged target killer arrested from Orangi Town | AAJ News. Although one arrest doesn't say much, it contradicts the advocate's testimony, verily, that no operation is being conducted in the katchi abadis.
I sympathize with the citizens who'll have to put with a bit of harassment and maybe even temporary incarceration by the police, but I do not see any other way. If somebody is in fact innocent they can maintain their innocence by refuting the allegations which the police have brought against them. Although forced testimonies are not uncommon, an operation of this magnitude will definitely have redundancy checks to ensure that there is no false conviction. To your mind is there any other way we can bring criminals to justice, other than, of course, by knocking down doors and arresting people against whom there is irrefutable evidence say the likes of Buledi and Uzair Baloch and their gang of bandits?