 Black election workers like Ruby Freeman and Shea Moss in Atlanta. Alana Durkin-Richer has the latest on the investigation into Saturday's assassination attempt on Donald Trump. The FBI has said it's investigating this as a potential act of domestic terrorism, but so far its investigation has turned up few clues about a potential ideology or motivation. Federal law enforcement officials are warning of potential retaliatory acts of violence, saying they've seen an uptick of threatening rhetoric online.