Islamic Relief, the largest Islamist charity in the world, has a major presence in the United States and Europe. But charity is not Islamic Relief's only mission. The Muslim Brotherhood-founded organization is banned in Israel and the United Arab Emirates due its ties to terrorism; Bangladesh has blocked it from working with Rohingya refugees for similar reasons. When, last month, a British newspaper uncovered virulently anti-Semitic social media posts and glorification of terrorism by a leader of the organization, it came as no surprise. But can this serve as a wakeup call to encourage other states to follow Israel and the UAE's lead?