In times of war or conflict, a government may spread information containing biased accounts of the enemy. This is called

Propaganda is the circulation of biased accounts by agents like governments or political parties.

Explanation:

When a political party or government circulated information that is biased or misleading in nature, it is called propaganda. It can be used during war efforts to rally public support and it can also be used more generally in political systems to try to promote a particular point of view. An example used by the US government in the Spanish American War was publications via cartoons with the tagline, "Remember the Maine! "  The Maine was a USS Maine was a naval ship that was sunk in Havana Habor. The US government always suspected it was the Spanish and it was a justification to the average American for getting involved in the Cuban Independence Movement and their resistance to Spain.  

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