Recommendations for reforming high school mathematics curricula emphasize the importance of engaging students in mathematical investigations of societal issues (CCSSI [Common Core State Standards Initiative] 2010; NCTM [National Council of Teachers of Mathematics] 2000). Proponents argue that these investigations can positively influence students' social awareness and their perceptions of the use of mathematics for understanding societal problems (Frankenstein 1997; Gutstein 2006; Skovsmose 1994). In this article, I share results from my analysis of high school students' experiences as they participated in an investigation of racial bias and the death penalty. Although this classroom investigation took place about ten years ago, the lessons from students' experiences are still relevant today.