Nuns carry relics of Jerzy Popieluszko in front of his portrait on June 6, 2010, in Warsaw in a procession after a beatification mass of Jerzy Popieluszko, a Roman Catholic priest and opposition activist murdered 25 years ago by Poland's communist secret police. Archbishop Angelo Amato, the Vatican's Prefect of the Congregation for the Causes of Saints, will represent Pope Benedict XVI at the beatification massin central Warsaw which 100 bishops will also to attend.