A federal prosecutor admitted in court papers that three D.C. Metropolitan Police Department undercover officers acted as provocateurs at the northwest steps of the U.S. Capitol on Jan. 6, 2021. The admission came in a March 24 filing before U.S. District Judge Rudolph Contreras that seeks to keep video footage shot by the officers under court seal. Prosecutors accused the case defendant—William Pope of Topeka, Kansas—of an “illegitimate” attempt to unmask the video as part of his alleged strategy to try the case in the news media. Pope filed a motion to remove the court seal on Feb. 21. “The...