The Anti-Defamation League’s Center on Extremism has reported online activity connected to a recent FBI arrest in Florida. A 19-year-old man was charged after allegedly vowing to "shoot up a mosque." The ADL identified online postings indicating this threat, bringing it to the attention of authorities. This case highlights the ongoing concern of extremist ideologies manifesting in real-world threats against religious institutions. The incident underscores the role of online monitoring in identifying and mitigating potential violence. Further investigation is underway to determine the full extent of the suspect’s plans and potential connections. The ADL continues to track and report on extremist activities across the United States.