Machtergreifung is a German word meaning seizure of power. It is normally used specifically to refer to the Nazi take over of power in Weimar Germany in 1933. The Nazi party used a right-facing swastika as their symbol and the red and black colors were said to represent Blut und Boden (blood and soil). ... The period of German history from 1919 to 1933 is known as the Weimar Republic (in German Weimarer Republik). It is named after the city of Weimar, where a national assembly convened to produce a new constitution after the German monarchy was abolished following the nations defeat in World... 1933 was a common year starting on Sunday (link will take you to calendar). ...

The term Machtübernahme (take over of power) is also used for this event.

It was followed by the Gleichschaltung, the period to around 1937 characterized by systematic elimination of non-Nazi organizations that could potentially influence people, such as trade unions and political parties. The German word Gleichschaltung (literally synchronising, synchronization) is used in a political sense to describe the process by which the Nazi regime successively established a system of totalitarian control over the individual, and tight coordination over all aspects of society and commerce. ... 1937 was a common year starting on Friday (link will take you to calendar). ...

Note that when used in German, both "Machtergreifung" and "Machtübernahme" retain their more general meanings and are not particularily related to the Nazis. While "Machtergreifung" always indicates violence and/or dictatorship, "Machtübernahme" can be used for any take over of power, whether peaceful and legitimate or violent and illegitimate.