Like many people, Mark Zuckerberg has been battling trolls since he took to Facebook to air his grievances with President Donald Trump. Zuckerberg objects specifically to the president’s decision to end the Deferred Action for Childhood Arrivals act (DACA).

Unlike the rest of us, however, Zuckerberg has an unparalleled platform to back up his opinions in front of thousands of viewers. He did this on Wednesday afternoon, hosting three DACA recipients in his home on a Facebook Live to discuss their experiences and the misperceptions he’s tired of hearing.

After speaking with one DREAMer, who mentioned her undocumented mother’s fear of going to the police, Zuckerberg used harsh language to condemn what she referred to as “the country’s broken immigration system.”

“I’ve sat with so many folks who are undocumented who talk about how their landlord cheats them,” he said.

He wondered aloud what happens if you are undocumented and have been robbed or sexually assaulted and are too afraid to seek help from law enforcement officials for fear of being deported.

“It’s just an insane state for our country to be in,” he said. “I don’t think anyone here in good conscience should think this is how our country should work.”

Zuckerberg has been extremely vocal in his support for DACA, and immigration reform in general. Along with his wife Priscilla Chan, Zuckerberg co-founded FWD.us, an immigration reform-focused organization. When Trump announced his plan to end the program within the next six months, Zuckerberg called it that it “a sad day for our country.”

At the end of his Facebook Live, Zuckerberg called for Americans to advocate for Dreamers.

“We’re gonna fight alongside you to help get this resolved,” he said. “Not just for the folks on daca but for all dreamers and undocumented folks.”