The <a href="https://en.wikipedia.org/wiki/Night_of_the_Long_Knives" id="mw3g" rel="mw:WikiLink" title="Night of the Long Knives">Night of the Long Knives</a>, <a href="https://en.wikipedia.org/wiki/Adolf_Hitler" id="mw3w" rel="mw:WikiLink" title="Adolf Hitler">Adolf Hitler</a>'s violent purge of his political rivals in Germany, takes place.