Days after the March 9 bombing of a maternity and children's hospital in the Ukrainian city of Mariupol, comments claiming the attack never happened began flooding the queues of workers moderating Facebook and Instagram content on behalf of the apps' owner, Meta Platforms.

The bombardment killed at least three people, including a child, Ukraine's President Volodymyr Zelenskyy said publicly. Images of bloodied, heavily pregnant women fleeing through the rubble, their hands cradling their bellies, sparked immediate outrage worldwide.

Among the most-recognized women was Mariana Vishegirskaya, a Ukrainian fashion and beauty influencer. Photos of her navigating down a hospital stairwell in polka-dot pajamas circulated widely after the attack, captured by an Associated Press photographer.