Connect your personal experience/interest to the inherent issues of the topic. Consider how your concern fits into a broader context.
Make sure your topic is manageable for the length/scope of your paper/project/thesis.
Areas of focus may be:
Sometimes it takes several attempts to properly refine a topic. You are aiming for a research question that will enable you to make good decisions about what kind of source material you need and where you should look for that material.
Remember! To make your search more efficient, consider using truncation to find words with variant endings. For example, racis* -> racism, racial, racist, racists