Muscovites lay flowers and toys at the monument of the victims of the Beslan school massacre in central Moscow as Russia marks the 20th anniversary of the siege when over 330 people -- more than half of them children -- died in the country's deadliest attack in modern history. "Even though many years have passed, the memories are still vivid. And of course we experience it as a tragedy not because today is the 20th anniversary, but every year" says Diana Kodoeva who lost relatives in the tragedy. IMAGES AND SOUNDBITES