Argentina's Memoria Activa association organizes memorial event, demands 'truth and justice' over 1994 attack, which killed 85 civilians

A drawn-out legal case after the 1994 terror attack has been riddled by corruption charges, including against the now-vice president, and the alleged murder of a Jewish prosecutor

Some 3,000 attend demonstration in Buenos Aires; Nisman led the investigation into presidential cover-up of 1994 bombing of Jewish community center that left 85 dead, 300 wounded

Alleged perpetrators of deadly attack, including former foreign minister Ali Akbar Velayati, won't set foot on Argentine soil, holding up investigation