What is Antifa, who are its members and what is their ideology? Trump cracks down on them as terror organization

President Donald Trump labelled Antifa a major terror group. This action followed Charlie Kirk's assassination. Trump called for probes into Antifa's funding. Antifa opposes fascism and racism. It is a decentralized network. The group gained attention during Black Lives Matter protests. Antifa's roots lie in anti-fascist movements. The group uses varied tactics.