The aircraft normally used to provide surveillance for big federal drug and gang busts flew over the Washington  DC protests  earlier this month, as well as over Baltimore during protests over the death of Freddie Gray reports BuzzFeed News

The FBI's Cessna Citation is a one-of-a-kind spy plane fitted with sophisticated cameras for long-range, persistent video surveillance, day or night. It began circling the nation’s capital late on the night of June 1, and then again the following two nights as protests continued, and it made a shorter flight on June 6.