In contrast to conservatives, progressives argue that platforms don’t block enough content. In particular, progressive critics point to the prevalence of allegedly harmful content on social media platforms, including politically manipulative content, mis- and disinformation (especially about medical issues), harassment and doxing, and hate speech. They argue that social media algorithms actively promote such content to increase engagement, resulting in many forms of social harm including greater political polarization. And they argue (along with conservatives) that social media platforms have been especially guilty of permitting materials harmful to children to remain accessible. As with conservative attacks however, the progressive war on social media is rife with exaggerations and rests on shaky empirical grounds. In particular, there is very little proof that that platform algorithms increase political polarization, or even proof that social media harms children. Moreover, while not all progressive attacks on social media lack a foundation, they are all rooted in an entirely unrealistic expectation that perfect content moderation is possible.