The Night of the Long Knives
The episode title and some of Hara Singh's dialog is an anachronism. The episode takes place in the late nineteenth century. The term "Night of the Long Knives" refers to a specific event that occurred in 1934. On June 30th and July 1st, Adolph Hitler and his Gestapo organized a bloody political purge that eliminated his political enemies in government - chiefly socialists and rival conservative factions. Official records put the death total at just under eight, but many historians believe the actual tally is approximately four hundred.