Shaming behaviour on social media has been the cause of concern in recent public discourse. Supporters of online shaming argue that it is an important tool in helping to make social media and online communities safer and more welcoming to traditionally marginalized groups. Objections to shaming often sound like high-minded calls for civility, but this chapter argues that shaming behaviour poses serious risks. It identifies the moral and political risks of online shaming. In particular, shaming threatens to undermine our commitment to the co-deliberative practices of morality. As a result, online shaming can undermine the very goals it is supposed to accomplish.