Arizona Rep. Isela Blanc arrested during DACA protest on National Mall in D.C.

State Rep. Isela Blanc was arrested Monday during a protest for undocumented immigrants on the National Mall in Washington, D.C.

Blanc, D-Tempe, was in the capital along with so-called "dreamers" to demand Congress pass comprehensive immigration reform. Monday was supposed to be the day that the Deferred Action for Childhood Arrivals (DACA) program expired, but the U.S. Supreme Court delayed its ending.

A video of the incident posted by the immigrant-advocacy group Living United for Change in Arizona on Facebook shows Blanc and other demonstrators being arrested after they staged a sit-in, blocking a street on the mall.

Blanc, who was formerly undocumented, traveled to D.C. along with three dreamers and members of the group to demand immigrant youths be spared from deportation.

“I’ve been undocumented, I know the fear and anxiety the dreamers feel," Blanc said in a statement before the protest. "I’m also an elected official, so I know what it means to reach the American Dream, which is all they want. I have a moral obligation to fight for them."

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The DACA program protects from deportation proceedings hundreds of thousands of undocumented immigrants brought to the U.S. as children. President Donald Trump had planned to end the program Monday, until the court blocked him.

One of Blanc's colleagues in the Arizona Legislature, Rep. Tony Navarrete, D-Phoenix, was in D.C. for a conference and witnessed her arrest.

Navarrete said as the sit-in demonstrators were arrested, the crowd around them chanted in support. As officers lifted Blanc from the road, they chanted "Isela we see you, we love you, thank you," he said.

"It was just a really powerful and emotional moment," Navarrete said. "This is not a time to fear. This is a time to stand up and push back on the rhetoric of this White House."