The Boston field office of the FBI has warned parents about the rise of online extremist groups targeting children, linked to an ideology called Nihilistic Violent Extremism. The FBI is investigating around 350 suspects nationwide, often young men aged 25 and under, who engage with children on platforms like Roblox, Minecraft, and Call of Duty, as well as social media like Discord. These suspects manipulate children into producing sexual content, self-harm, or violence. In Massachusetts, Joseph Pacheco, 23, faces federal charges for sending child pornography and animal crush videos to a child and making threats. U.S. Attorney Leah Foley noted the challenges in prosecuting cases involving minors, highlighting the need for parental vigilance.