RUSSIAN artist Alyona Kazinskaya likes to fill her social media feed with cheerful messages and vivid floral paintings. For 30 minutes last Friday night, it turned into a timeline of terror. Kazinskaya and a friend had bought last-minute tickets to see Soviet-era rock group "Picnic" perform in front of 6,200 people at a concert hall near Moscow. They thought about taking their daughters but decided to go by themselves. It was at 8:01 p.m. that Kazinskaya posted a first 10-second audio message on her Telegram channel, sounding breathless and frightened as loud bursts of gunfire rang out. "I love you…