I don't think anything inherently makes anime fans into fascists, but if you're the kind of guy who has an unhealthy obsession with the purity of Japan... well, you see what I mean.
I occasionally wonder what would happen if we gave the extreme right wingers in this country some land where they could live out their dreams, and how long it would take to slip into anarchy and purges.
These are people who think they could easily win a war against the military, and who would definitely shit their pants if they ever faced real combat.