Terminology
The term "Bloody sunday" was created and supported by the Nazi-propaganda officials. An instruction issued by the Ministry of Propaganda for the press said:
(...)must show news on the barbarism of Poles in Bromberg. The expression "bloody sunday" must enter as a permanent term in the dictionary and circumnavigate the globe. For that reason, this term must be continuously underlined..
Read more about this topic: Bloody Sunday (1939)