How do societies remember historical political violence? We draw on an original dataset of more than 150 memorialization projects proposed by truth commissions in 28 post-violence countries, from 1970 to 2018. These projects include the removal of monuments, installation of museums, inauguration of national days of remembrance, and more. Truth commission recommendations data allows us to not only consider memory sites once established, but also to examine blueprints for the types of memory that could have been made. We develop a typology and inductively generate a theory of the political contests and conflicts that different memory projects are likely to trigger—contests and conflicts that we expect influence the likelihood of project initiation and completion. We conduct an initial probe of the theory using our new data. In so doing, we offer the first systematic, global study of setting and implementing the memorialization agenda in post-violence societies.