It’s fighting back. The search giant announced Sunday that it’s adding new tools to combat extremism online, particularly on its video-sharing platform. YouTube’s new anti-terror weapons include machine learning “content classifiers” to identify extremist materials, plus a larger pool of human experts to review them. It’ll also take steps to minimize exposure to inflammatory videos that don’t outright violate community guidelines, making them harder to find and promote. Finally, Google plans to “harness the power of targeted advertising” to attract potential ISIS recruits and steer them away from radicalism.