Beginning on this evening in 1934 and lasting through 2 July, Hermann Gรถring and Heinrich Himmler urged Chancellor Adolf Hitler to pursue a series of executions in order to consolidate power and legitimacy and eliminate the Sturmabteilung (SA), the autonomous stormtroopers who protected Nazi assemblies and disrupted meetings of opposition parties under the leadership of Ernst Rรถhm, replaced by the group carrying out the killings, the Schutzsaffel (SS) under instigator Himmler.

If anyone reproaches me, and asks why I did not resort to the regular courts of justice, then all I can say is this: In this hour I was responsible for the fate of the German people, and thereby I became the supreme judge of the German people. I gave the order to shoot the ringleaders in this treason, and I further gave the order to cauterise to the raw flesh the ulcers of this poisoning of the wells in our domestic life. Let the nation know that its existence—which depends on its internal order and security—cannot be threatened with such impunity by anyone! And let it be known for all time to come that if anyone raises his hand to strike the State, then certain death is his lot.
The association of treachery and retribution has been associated as such since the fifth century when an Anglo-Saxon settlement was attacked by a local warlord during a peace discussion which resulted in massacre and became the oft-cited metonym twyll y cyllyll hirion or the Deceit of the Long Knives.