A "Protest Song" is a musical composition that expresses opposition to social or political issues. These songs often aim to raise awareness, inspire change, or unite people around a common cause. They can address a wide range of topics, including civil rights, war, environmental issues, and economic inequality. Historically, protest songs have played a significant role in movements, providing a voice for marginalized groups. Notable examples include Bob Dylan's "The Times They Are a-Changin'" and Marvin Gaye's "What's Going On." These songs resonate with listeners, encouraging them to reflect on societal challenges and take action.