Why I focus on a more militant style of left politics than most :)
Fascists are only defeated once the people willing to take them down realize it's a war and they have to act like it. Which doesn't mean violence in most cases, but it does mean accepting the magnitude of the threat and moving to deal with it.
Why I go after the idea of America so much is that I think deep down most people want an alternative. But most of the ones offered are dressed up in elitist rhetoric and thinking. Too many smart people want to tell everyone how to live, but that's what produces the fascist counter-response.
I see it the same way I do a plague: isolate it, buffer your community against it, encourage it to wither away - but when it crosses certain lines smash it without remorse or hesitation.