describe how you understand ideology in your own words

Based on the video, I interpreted that political ideology basically are different sets of beliefs in politics that explains what rules society should follow or how they should be. To further explain ideology are basically groups of people who agree on a certain belief. For example, socialism ideology focuses more on a society that creates wealth. 

How do you understand the difference between conservative and liberal ideology in US politics? What seem to be the big differences, the dividing line? Given an example to backup your arguments.

There are a lot of major differences between liberalism and conservative ideology in politics. Conservatives believe that a large government puts individual liberties in danger. Liberals believe in individual rights and that the government should protect their individuals. While conservatives have values that conserve traditional and social practices, liberals values believe in equality and defends an individual’s freedom and liberty. 

I understand Althusser’s definition of ideology as how the government/society creates values or beliefs that we tend to subconsciously follow and believe.