Bhutto heir makes political debut at huge Karachi rally amid tight security
Son of assassinated former Pakistani prime minister Benazir and ex-president Zardari attends big Karachi rally amid tight security
Ultra-tight security measures were in place for the rally in Pakistan's biggest city Karachi, where huge crowds of supporters sang and danced, waving the flag of Bhutto's main opposition Pakistan People's Party.
Bilawal, 26, is being groomed to lead the party by his father Asif Ali Zardari, who was Pakistan's president from 2008 until last year. The rally marked the seventh anniversary of the devastating bomb attack that hit Benazir Bhutto's homecoming parade in Karachi on October 18, 2007.
The attack killed 139 people in the deadliest single terror attack on Pakistani soil.
Bhutto Zardari arrived at the rally by helicopter and was set to address the crowds from the same bullet-and-bomb-proof truck that his mother used for the ill-fated parade, which was meant to mark her triumphant return after nearly a decade of self-imposed exile.
She survived the bombing, but was assassinated in a gun and suicide attack in an election rally in Rawalpindi two months later. Bilawal was her only son.