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A Northwestern University professor was among several medical experts removed from an annual American Diabetes Association event after handing out copies of a recently published editorial critical of President Donald Trump’s challenges to the United States’ medical research system.

Justin Ryder, an associate professor of surgery and pediatrics at Northwestern’s Feinberg School of Medicine, was among five participants escorted out of the American Diabetes Association’s Scientific Sessions conference in New Orleans on June 5, after handing out copies of an editorial published in the association’s journal, Diabetes Care, according to multiple reports.

MedPage Today first reported the news and published videos of the incident, which show local law enforcement escorting the five participants out and confiscating copies of the editorial.

Ryder, who was not a contributing writer to the editorial, declined to give an interview to the Tribune about the incident. However, he told the Chicago Sun-Times that the move reflected “censorship” and that the scientific community needs to be able to distribute knowledge freely to improve human health.

The editorial criticizes the Trump administration’s proposed request to cut $5 billion from the National Institutes of Health’s 2027 budget, along with the “reduction in opportunities for scientists with appropriate expertise to continue their work and drive new science.” The criticism is the latest against the administration’s cuts to the healthcare system that advocates say could affect patients across the country facing a range of ailments, including those living with HIV or AIDS in Illinois and other states.

Around 12 conference attendees distributed the editorial, which did not have prior approval from the American Diabetes Association, according to a message the organization sent to participants and shared with the Tribune. The participants were asked to stop distributing the flyers and when a few of them did not, they were escorted out by security and police already on-site, the statement said.

“Importantly, these actions were taken because of the violation of conference policies regarding unauthorized distribution of materials—not because of the viewpoints expressed in those materials,” the statement said. “Respecting editorial independence of this piece in an ADA-owned journal demonstrates the work we’ve done as an organization to ensure everyone’s voice is heard.”

It continued by recognizing that “emotions are high for many attendees regarding these actions,” and apologized that the incident escalated into a distraction from the conference. The organization said it intends to meet with the parties involved after the conference’s end, according to the statement. “We also remain committed to creating an environment where scientific exchange can occur safely, professionally, and respectfully for everyone,” the association said. “As we reflect on this incident, our hope is that we move forward together with grace, mutual respect, and a renewed focus on the people who depend on all of us.”