#ChooseToChallenge is the theme for International Women's Day 2021. Here's what you should know.

Change comes from challenge — and that is the message organizers of International Women's Day 2021 hope to trumpet Monday.

"A challenged world is an alert world," the International Women's Day website says. "We can all choose to challenge and call out gender bias and inequality."

Gender parity in government, workplaces, health care, sports and media coverage is achievable through individual change, organizers say. They hope this year’s theme for International Women's Day — #ChooseToChallenge — will inspire individuals to challenge biases, question stereotypes and celebrate the achievements of women around the world.

In past years, International Women's Day was celebrated with festivals, marathons and other events across the world. But with the COVID-19 pandemic, most events will be virtual. They range from a Zoom painting event in Sydney to an online marathon in Singapore.