The lack of robust review mechanisms on NFT platforms enables the upload of extremist content, posing significant security risks. Decentralized Web3 ecosystems, like those hosting NFTs, often prioritize free speech, allowing unmoderated content to persist on blockchains. Studies reveal extremist NFTs, including far-right and jihadist propaganda, are already circulating, with platforms like OpenSea hosting such material. Without centralized oversight, identifying and removing harmful content is nearly impossible, fostering environments for radicalization and fundraising through tokenized memorabilia. Current regulations lag, focusing on traditional platforms, not Web3. To address this, NFT marketplaces must implement proactive content moderation, leverage AI for detection, and collaborate with regulators to balance innovation with public safety, ensuring extremist content doesn’t exploit blockchain permanence.