A sea of flowers and lit candles are placed in memory of those killed in Friday's bomb and shooting attack in front of Oslo Cathedral July 25, 2011. At least 100,000 people, many carrying white or red roses, rallied in Oslo on Monday to show support for victims of attacks that killed 76 people, police said. [Photo/Agencies]

A sea of flowers and lit candles are placed in memory of those killed in Friday's bomb and shooting attack in front of Oslo Cathedral July 25, 2011. [Photo/Agencies]