When we see a close up of Koska's phone at the end of the episode, one of the company names is "Plohoi robot ZAO" or "Bad Robot Company" in Russian.
According to security footage of the hit-and-run incident, the events in the episode start on October 20, 2011, the same airdate of the episode.
At the beginning of the episode, Finch is seen reading a first edition of the novel It Can't Happen Here by Sinclair Lewis. The novel, written during the Depression, is about a fascist dictator (who, prophetically, resembles Trump) in the US whose rise to power mirrors that of Hitler and Mussolini.
Later in the episode, Finch uses the name of a character, Walt Trowbridge, as an alias.