Current Situation of Karachi, Who is Responsible?

[youtube]http://www.youtube.com/watch?v=18FVWU2OOfc[/youtube]
[youtube]http://www.youtube.com/watch?v=wSSXPBZdSXc[/youtube]
[youtube]http://www.youtube.com/watch?v=7QCj4wZWHIA[/youtube]
[youtube]http://www.youtube.com/watch?v=1Rx-kYyMuVY[/youtube]