A(n) is a system of beliefs and values that define the role of government and the role of citizens in that government.

The term you're looking for is "political ideology." A political ideology is essentially a set of beliefs and values that outlines how a political system should function, including the relationship between the government and its citizens. Different ideologies can lead to varying interpretations of government roles—some may emphasize individual freedoms while others focus on collective welfare.

For instance, liberalism typically advocates for civil liberties and individual rights, while conservatism may prioritize tradition and established social structures. Socialism, on the other hand, emphasizes social equality and the redistribution of resources. Thus, understanding political ideology is crucial for engaging in political discourse and for comprehending how societies organize themselves and the implications that have for governance and civic responsibilities.