Well, if it's an idea, and the idea of Antifa is being Anti-Fascist, then it's a great idea, Anti-Fascist Action, is the execution of that idea, they kill people who are conservative and ignore actual fascists and nazis, so it's a horrible execution. For ideas to work they need a good execution, but as we see, this idea has an execution that's completely terrible. But hey, that doesn't matter because "RiGhT-wInGeRs ArE bAd!"