The defection thesis holds that members of marginalized social groups are obligated not to express views important to others in the group which are regarded by the others as substantively wrong. In this essay, I criticize the defection thesis and evaluate arguments that seek to vindicate it. These arguments, I conclude, fail. Then, I argue that we have reason to believe sanctioning defectors in certain ways is wrongful and that the expression of their contentious ideas is good for members of marginalized groups. We are left to conclude both that marginalized people have no obligation to suppress their heterodox views, and that it is likely wrong to sanction them for expressing these views even if it were wrong for them to do so.