Dozens of protesters on Thursday staged a sit-in at the U.S. Senate Hart Building in Washington to protest the Trump administration’s immigration policy.

Police have arrested about 40 people — mostly women — inside the atrium of the federal building as part of the #WomenDisobey protest, according to CNN.

Rowdy protest underway in the Senate's Hart building, with women sitting down, chanting and protesting inaction in dealing with immigration. https://t.co/a5SlX89ztL — Manu Raju (@mkraju) June 28, 2018

“They want to create a big moment up here on Capitol Hill the day that many lawmakers will wrap up their legislative work and head home without addressing the family separation issue,” CNN correspondent Sunlen Serfaty reported.

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Several Democratic lawmakers, including Sen. Tammy Duckworth Ladda (Tammy) Tammy DuckworthMcConnell focuses on confirming judicial nominees with COVID-19 talks stalled Biden courts veterans amid fallout from Trump military controversies John Fogerty: 'Confounding' that Trump campaign played 'Fortunate Son' at rally MORE (Ill.), Sen. Mazie Hirono Mazie Keiko HironoManchin defends Supreme Court candidate Barrett: 'It's awful to bring in religion' Democrats shoot down talk of expanding Supreme Court Democrats unveil plan declaring racism a public health issue MORE (Hawaii) and Rep. Pramila Jayapal Pramila JayapalDHS opens probe into allegations at Georgia ICE facility Progressive Caucus co-chair: Whistleblower complaint raises questions about 'entire detention system' Buttigieg, former officials added to Biden's transition team MORE (Wash.), met with the protesters.

Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) sat down on the floor and joined the sit-in.

Demonstrators draped themselves in mylar blankets, similar to the ones given to immigrant children separated from their parents at the U.S.-Mexico border.

Crowds from the "Women Disobey" march disrupted traffic in the streets of Washington earlier in the day. The event was organized to protest President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE's "zero tolerance" policy of prosecuting anyone accused of illegally crossing into the U.S. via the southern border.

Trump signed an executive order last week, after days of bipartisan pressure, that ended the practice of separating families who were detained after entering the U.S.

The Women's March, which mobilized worldwide protests the day after Trump's inauguration in 2017, organized Thursday’s march.

Women are being arrested by the hundreds in Congress demanding an end to the criminalization of immigrants. #EndFamilyDetention #AbolishICE pic.twitter.com/ns5KC4FRlV — Women's March (@womensmarch) June 28, 2018