Ideology refers to a system of ideas and ideals that forms the basis of economic or political theory and policy. Some dominant ideologies discussed include capitalism, patriotism, traditional gender roles and marriage. Political ideologies provide a set of principles for how society should work. Examples of political party ideologies given are the BJP in India, which supports Hindutva, and Pakistan's ideology which is based on Islam and the two-nation theory. Movies can also reflect and influence dominant ideologies of the time regarding issues like gender, class, environmentalism and more.