The Night of the Long Knives also known as operation Hummingbird was a purge between June 30th to July 2nd in 1934 on the SA. THis political murder dissolved the SA as one of Hitler's party militia.

Role in Hitler's Consolidation of Power:
Hitler commanded the purge because he felt a threat from the independence of the SA and it's leader Ernest Rohm to his newly gained power. The killings were carried out by the SS and the Gestapo, the regime's state police, and it indoctrinated fear into people who were against Hitler, or those who were planning to.