Russian artist recalls how she said 'goodbye' to world during Moscow concert attack

Russian artist Alyona Kazinskaya, who narrowly escaped the Crocus Mall attack with burning lungs and stinging eyes, vividly recalls the harrowing experience that engulfed the building in smoke, hindering the safe exit of survivors. Kazinskaya and friends purchased last-minute tickets to watch the Soviet-era rock group "Picnic" perform at the Mall near Moscow.