The event, led by the World Health Organization (WHO) and the nonprofit group Global Citizen, told the personal stories of teachers and healthcare, grocery, delivery, postal and other workers.
All those taking part in the event will appear remotely due to social distancing and shutdowns aimed at curtailing the spread of the disease that has killed more than 124,000 people worldwide.
Beyond the 34 people who died and at least 65 who were wounded, the shootings likely had a psychological impact on young people of the three cities that endured the attacks.
“Everyone is saying that Gaga’s glowing and hiding a baby bump,” an insider spilled to In Touch magazine, an American gossip magazine.
Last week, Gaga released a video on Monday with a special "Shalom" greeting for her fans in Israel.