"Okay so how DO we beat fascism?"
You beat fascism, by making nazis afraid. You make the cost of being a nazi, higher than the perceived reward for a successful fascist takeover. You make them pay that cost in social, financial and yes, physical capital. You make them pay for every inch in suffering and pain.
You will never end fascist ideology in America, but you can make fascists so afraid they crawl back to their basements. You know exactly what I mean. You make being a nazi hurt. Bad.