Atheistic nationalism or vice versa nationalistic atheism is a political ideology that combines the basic elements of nationalism and atheism.
USSR USSR during the rule of Joseph Stalin is the first example of an atheist-nationalist ideology in government. Also Albanian leader Enver Hoxha also preached atheism nationalism.
The main objective of this ideology is to educate the nationalism without interference of religion. Propagate atheism among the population and teach natural sciences.
References
Atheistic nationalism Wikipedia(Text) CC BY-SA