Wednesday marked the fifth World Hijab Day, an annual event that found new significance this year in the wake of President Donald Trump’s recent executive order targeting Muslims and immigrants.

A gathering at New York’s City Hall in honor of the event was marked by crowds of women wearing American flag hijabs and holding signs to protest Islamophobia.

Spencer Platt via Getty Images Women wear American flag hijabs at an event at City Hall for World Hijab Day on Wednesday in New York City.

World Hijab Day started in 2013 in response to discrimination against Muslim women who wear the hijab. The event celebrates religious freedom and Muslim women’s right to wear a head covering.

The intention behind the tradition is to give non-Muslims and non-hijab-wearing Muslim women an opportunity to experience the hijab for a day, said founder Nazma Khan on the World Hijab Day website.

Not all Muslim women agree that such solidarity actions are effective in combating bias. Some argue that the media’s focus on the hijab only serves to further marginalize Muslim women, many of whom take issue with the hijab’s complicated social and political history.

But for many Muslim women, National Hijab Day offers a chance to celebrate the religious freedoms enshrined in the U.S. Constitution ― especially at a time when it seems some of the country’s leaders have lost sight of them.

Olympic fencer Ibtihaj Muhammad tweeted her support of the event on Wednesday, ending her comments with hashtag the “#resist.”

Blessed to live in a time where I have the freedom to wear what I want. Happy World Hijab Day 🇺🇸❤ #resist pic.twitter.com/f23Cq5RHA0 — Ibtihaj Muhammad (@IbtihajMuhammad) February 1, 2017

Scroll down to see photos from World Hijab Day in New York City:

Spencer Platt via Getty Images Women wear American flag head scarves at an event at city hall for World Hijab Day on Wednesday in New York City.

Spencer Platt via Getty Images New York City Police Officers Aml Elsokary (left) and Maritza Morales wear American Flag head scarves.

Spencer Platt via Getty Images

Spencer Platt via Getty Images

Spencer Platt via Getty Images

Spencer Platt via Getty Images

Spencer Platt via Getty Images

Spencer Platt via Getty Images

Anadolu Agency via Getty Images

Spencer Platt via Getty Images