Serious academic papers require a literature review. The lit review does two things:
1.Shows the reader that you know what scholarship came before you. What do scholars study about your subject and how do they study it?
2. Prepares the reader for what you are going to say (argument, thesis) and possibly provides some background for the kind of research you are going to do. (qualitative, quantitative, mixed methods).
Your literature review might incorporate academic, peer-reviewed articles, government reports and websites, datasets, and news sources, among other forms of literature. Begin with the scholarly, peer-reviewed items as much as possible to get an overview of the field. Then move into other sources of information with a better sense of direction.