Arena Zagreb stadium is lit in red on the occasion of the global "Red Alert" initiative in Zagreb, Croatia, on Sept. 1, 2020. The initiative was launched to raise awareness of the crisis situation of the event industry due to COVID-19 pandemic. Thousands of buildings and venues across the world was lit in red on Tuesday night to dramatize the urgent need for financial relief in the event industry. (Luka Stanzl/Pixsell via Xinhua)

Arena Zagreb stadium is lit in red on the occasion of the global "Red Alert" initiative in Zagreb, Croatia, on Sept. 1, 2020. The initiative was launched to raise awareness of the crisis situation of the event industry due to COVID-19 pandemic. Thousands of buildings and venues across the world was lit in red on Tuesday night to dramatize the urgent need for financial relief in the event industry. (Luka Stanzl/Pixsell via Xinhua)

Arena Zagreb stadium is lit in red on the occasion of the global "Red Alert" initiative in Zagreb, Croatia, on Sept. 1, 2020. The initiative was launched to raise awareness of the crisis situation of the event industry due to COVID-19 pandemic. Thousands of buildings and venues across the world was lit in red on Tuesday night to dramatize the urgent need for financial relief in the event industry. (Luka Stanzl/Pixsell via Xinhua)