Billie Eilish's brother Finneas rips 'old White men' who were angered by anti-ICE Grammys speech

O'Connell joined Eilish on stage while she delivered her acceptance speech for her song "Wildflower," which was produced and co-written by her brother.

"No one is illegal on stolen land," Eilish said while wearing an "ICE OUT" pin. "I feel really hopeful in this room, and I feel like we need to keep fighting and speaking up and protesting. Our voices really do matter, and the people matter."

"And f--- ICE, that's all I'm gonna say, sorry," she added.

"Any White person who does a public 'stolen land' acknowledgment should immediately give his or her land to Native Americans. Otherwise, they don't mean it. Also, I'm pretty sure they don't mean it," Sen. Mike Lee, R-Utah, wrote.

Prior to Eilish's controversial Grammys speech, O'Connell stirred up some controversy of his own after he blasted conservatives on social media last week over what he considered to be a hypocritical response to the fatal shooting of Alex Pretti by a federal agent.

His comments came on the heels of the fatal shooting of Pretti, a 37-year-old Minneapolis resident and U.S. Department of Veterans Affairs ICU nurse, who was shot during an immigration enforcement operation on Jan. 24.

"The conservative argument that allows school shootings to continue has always basically boiled down to, 'We have to protect the Second Amendment, we have to allow people to carry weapons,'" O'Connell said.

"Oh, some little kids die, that's OK with them. Unf------ believable argument," he continued. "Every argument I've seen for why Alex Pretti's death was justified yesterday is like, 'Well, he had a gun.' Shut the f--- up! You've spent 30 years straight telling us that children have to die so that we're allowed to legally carry weapons."

"This guy was being beaten to a pulp on the ground," the producer said. "He didn't draw his weapon. He had a weapon on him legally, and they shot the f--- out of him and killed him. So shut the f--- up!"

Fox News Digital's Nora Moriarty and Lindsay Kornick contributed to this report.