Celebrities are showing up and speaking out!
As crowds gathered at international airports across the country over the weekend to protest President Donald Trump's executive order to ban more than 130 million people from the United States, including legal permanent residents and refugees, celebrities were quick to join and add their voices.
WATCH: Sophia Bush, Miley Cyrus, Sia and More Respond to President Donald Trump's Immigration Ban
Among the few hundred peaceful protesters ET saw gathered at LAX on Saturday included Search Party star Alia Shawkat and Gaycationhost Ellen Page. The actresses, who worked together in the 2009 film Whip It, walked with protesters on a permitted march through the international departures terminal and chanted along with the crowd, while Shawkat carried a sign.
The 27-year-old Shawkat, whose father emigrated from Iraq, used her social media presence to urge supporters to join the protest and repeat one of the popular chants: "LAX COME!" she tweeted, along with a photo of the gathered crowd. "We are growing every second NO TRUMP NO KKK NO FASCIST USA"
"LAX right now #nomuslimban," wrote Page, sharing a photo of the protest via Instagram.
Kick-Ass actress Chloe Grace Moretz, who was at the Women's March on Washington last weekend, joined in the LAX protest later, sharing a short livestream of the gathering on Twitter.
The peaceful gathering at LAX included speakers from organizations like the American Civil Liberties Union (ACLU), personal stories from immigrants and children of immigrants, and spontaneous singing from the crowd.
In New York, huge crowds flocked to JFK airport on Friday and Saturday, where filmmaker Michael Moore shared his observations from the protest.
"Thousands keep pouring into JFK Terminal 4! An amazing sight!" Moore wrote. "No planning, no organizing -- just me and others saying 'get to JFK now!'"
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More protests are planned at airports and other locations around the country on Sunday, and more celebs are continuing to speak out on social media in the ban's aftermath.
Watch the video below to see who else has taken to social media and encouraged donations to the ACLU and other organizations opposing the immigration ban.