A police van parked near where Lyra McKee was killed Friday in Londonderry, Northern Ireland. Photo: Charles McQuillan/Getty Images

The Police Service of Northern Ireland has reported 2 arrests in connection with the death of LGBTQ investigative journalist and author Lyra McKee, who was killed in Londonderry, Northern Ireland on Friday while covering riots that have followed ongoing Brexit proceedings, the Irish Times reports.

The bottom line: 2 men, ages 18 and 19, were arrested on Saturday under the Terrorism Act and have not yet been formally charged. Police said that a gunman fired shots toward police officers during the riots, which was also described by a reporter at the scene, per the BBC. Police are attributing Friday's violence to the New Irish Republican Army dissident group, which is not affiliated with the Provisional Irish Republican Army known for its role in the 1968-to-1998-era of the "Troubles,” per the New York Times.

The big picture: Some worry that Britain’s exit strategy may negatively impact "the openness and invisibility of the border once Northern Ireland has left the European Union," the Washington Post reports. Mckee's death and the violent turmoil that has arisen signify an alarming acceleration of unrest, reminiscent of challenges in Northern Ireland more than 20 years following the Good Friday peace agreement.

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Photo illustration: Sarah Grillo/Axios. Photo: Roy Rochlin/Getty Images and BRENDAN SMIALOWSKI/AFP via Getty Images

If you want to understand the rhetorical roots of Trump's Independence Day speech at Mount Rushmore, go back and watch Tucker Carlson's monologues for the past six weeks.

Between the lines: Trump — or rather his speechwriter Stephen Miller — framed the president's opposition to the Black Lives Matter protest movement using the same imagery Carlson has been laying out night after night on Fox.

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Illustration: Aïda Amer/Axios

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Bolton's hidden aftershocks

Photo illustration: Sarah Grillo/Axios. Photo: Justin Sullivan/Getty Images

The news media has largely moved on, but foreign government officials remain fixated on John Bolton's memoir, "The Room Where It Happened."

Why it matters: Bolton's detailed inside-the-Oval revelations have raised the blood pressure of allies who were already stressed about President Trump's unreliability.