Pakistani city fears return of ethnic violence

Nervous residents of Pakistan's biggest city are wondering if last weekend's political violence, in which about 40 people were killed, heralds a return of the bloodshed of the 1980s and 1990s. With the central government under mounting pressure over the judicial crisis and an election due at the end of the year, Pakistan looks set for a volatile time and Karachi could rupture along ethnic fault lines and descend again into bloody chaos.