I argue that if we claim colonialism is per se wrong, then we face a dilemma that stems from the fact that many states today are a result of past colonialism. We believe that postcolonial states have a right to self-determination such that it is wrong to colonize them. But this entails that there is a process that can turn a colonial state into a rightful state, and so we admit that there is a way to carry out colonialism that (...) is not wrongful. To avoid this conclusion, we must accept that the wrongness of colonialism has been superseded or remedied. These options either entail instrumentalism, which admits that colonialism is not per se wrong, or they are implausible. (shrink)