Domestic Terrorism and National Security

Two men accused of tossing a homemade explosive at protesters outside Gracie Mansion have pleaded not guilty in federal court, federal prosecutors say. An unsealed criminal complaint outlined by news reports alleges the defendants pledged allegiance to ISIS and left a "voluminous" digital trail that investigators used to bring terrorism charges; family members reportedly broke down in tears as the case moved into federal proceedings. The incident occurred outside the mayor's residence in New York City and has been treated by authorities as an act of suspected ISIS-inspired domestic terrorism rather than a simple criminal assault.