In the present paper, we analyze how the history of mathematics – and that of STEM disciplines in general – can become an effective tool to educate and heighten awareness about the Memory of the Shoah, with the aim of promoting an antiracist attitude. Several actions to achieve this goal have always been conducted in schools within the humanities. However, we would claim the important role assumed by the history of science in this perspective, starting from the analysis of some educational activities proposed in schools within the project ‘Mathematics knows no races or frontiers’. Ideas for historical-mathematical reflection for an antiracist education.