Psychological research has a longstanding tradition of conceptualizing racism as individual prejudice. When researchers have studied the more insidious, systemically embedded nature of racism, they have focused primarily on White participants or used them as the main comparison group of interest. Instead of continuing the practice of examining White participants to better illuminate the experience of ethnoracial minorities, we aimed to investigate the outcomes that arise when marginalized racial and ethnic groups adopt lay theories that center racism as a structural phenomenon and not solely as an interpersonal occurrence. This dissertation presents three studies (total N = 1,188) containing a mixture of pre-registered and exploratory analyses. Studies 1 and 2 describe pre-registered analyses examining how adopting systemic lay theories racism (over and above individual lay theories of racism) positively predicts ethnoracial minorities’ ability to identify systemic and individual instances of racism, positively predicts their sense of solidarity with other people of color, and negatively predicts their endorsement of protestant work ethic beliefs. The exploratory analyses delve into moderating factors such as self-reported skin color, broad racial and ethnic group membership, and generation status to ascertain the generalizability of these patterns. Study 3 describes an initial attempt to manipulate systemic lay theories of racism to provide causal evidence of its influence on our dependent variables of interest. This research contributes significantly to our comprehension of the downstream effects of embracing systemic lay theories of racism among marginalized ethnoracial groups, thereby advancing our understanding of racism beyond individual biases to encompass systemic dynamics.