More than 6,900 Westerners have traveled to Syria as foreign fighters for terrorist organizations, most notably ISIS. At least 150 of the foreign fighters were from the United States, and as of February 2017, 109 Americans have been charged with crimes related to supporting ISIS. This Note explores ISIS’s organized social mediacampaigns and its success in attracting Western recruits. It discusses proposals to curb ISIS’s online impact and the constitutional implications of the government adopting such proposals. This Note argues that in limited situations, judicial review of the government’s content based regulations over social media algorithms to combat terrorist propaganda should be subject to only intermediate — rather than strict — scrutiny.