This is surprising, even during the Cold War shooting people on the streets of DC was the stuff of John Lecarre' books.
During the Stalin's "consolidation", the Kemlin's FIS would kill people like Trotsky in Mexico, but not the US.
In the late 70s, Chile's Augusto Pinochet blew up a Chilean dissident (Orlando Letellier) with a car bomb on Sheridan Circle, no more than a mile from the White House. Bush league stuff.
Tell it to Walter Krivitsky.
The Bellevue Hotel where Krivitsky was killed is now the Hotel George. This is, from my perspective, a loss. The Bellevue was a perfectly serviceable old railroad hotel a couple of blocks from Union Station. It was cheap enough to recommend to visiting friends and the location couldn't be beaten. I have smoked many a cigar there. The Hotel George is much nicer, completely rehabbed, and quite expensive. I hate sending out of town friends to the burbs but the downtown hotels are pushing me that way. The price of progress.
Anyhow, I happened to be in the Hotel George a few years back, ostensibly to check out their well-reviewed restaurant but mainly to compare it to the old Bellevue. The George was doing a marketing shtick related to the Spy Museum, which is nearby. Naturally, I asked at the desk whether they were doing anything with the Krivitsky case. I got blank stares from the three desk attendants, one of them the manager, present at the time. And so does history fall through the memory hole.
If I were running the Hotel George, I'd have the Krivitsky room restored to it's 1940's appearance, have a lobby display about Soviet espionage and KGB killers haunting Washington, get the Spy Museum to refer tourists back my way, and get in on the active D.C. history walking tour business, as well as the ghost tours around Halloween. Maybe I should become a marketing director.