The Night of the Long Knives

75 years ago today, on June 30, 1934, in Germany, the “Night of the Long Knives” or "Operation Hummingbird" took place - several hundred members of the SA (a paramilitary organization of the Nazi Party), including its leader Ernst Röhm and other senior members of the Nazi Party were killed by the SS on the orders of Adolf Hitler, for allegedly being involved in a plot to assassinate him. Also killed that night were hundreds of other perceived opponents of Hitler, including Kurt von Schleicher and Gregor Strasser.
This destroyed all opposition within the Nazi Party, gave power to the brutal SS and it also showed the rest of the world what a tyrant Hitler was.