As we discuss throughout the thesis, media bias plays a significant role in shaping individual and collective perceptions of news, which can have profound implications on how people form opinions and make decisions based on the information they consume. In order to address the potential negative consequences of media bias, it is crucial to explore effective communication strategies that can counteract its effects. However, existing research on the theoretical foundations of bias messages and visualizations is limited, with neither visualization theory nor bias theory providing comprehensive insights into effective approaches for addressing this issue within their respective domains.