Linguistic discrimination is a complex phenomenon. How should it be investigated? Evidential pool is of key importance. In this paper, we present specific conceptual and methodological challenges in the study of linguistic discrimination, with a focus on linguistic discrimination resulting from implicit attitudes and the steadily growing research on biases and structural approaches to social injustice. We conclude by proposing that a productive and comprehensive way to investigate linguistic discrimination rooted in implicit attitudes should seek to incorporate first-person perspectives and (...) testimonies from the linguistically harmed individuals, and discuss some arguments in support of this view. (shrink)