by the way, how exactly do the right-wing Japanese have so much power anyways, or is it simply that the entire country is almost right-wing? i don't know too much about Japanese politics, could someone enlgithen me on that?
Because they are completely unmolested by the authorities for various reasons and are therefore left free to blackmail, harass and bully the left who don't enjoy the same patronage from on high.
As for why the authorities don't tackle the far-right, that's a subject worthy of a novel and I couldn't possibly do it justice here.
It's certainly not due to their numbers - the far-right has never enjoyed widespread public support. But they have hijacked the more mainstream conservative movement by various means. Yasukuni for example is vigourously defended and quite understandably by the families of those regular soldiers interred. The lunatic right secretly interred the WWII butchers some time later, turning a somewhat uncomfortable national symbol into a shrine to genocide and denial. The mainstream might not like it, but they feel obliged to defend it nevertheless.
Wealthy, comfortable Japan cares little for international issues, allowing politicians to court the far-right without risking mainstream appeal. There are of course many in the ruling elite that openly sympathise with them, but even for those with more sane views, there's little downside in pandering.
Corruption is rife in Japan, and far-right organised crime is all too often in bed with the government.
Anti-communism dating from the American occupation has been perhaps the biggest factor in a blind eye being turned towards the far-right. Anti-left paranoia pervades Japan to this day, despite there having been no hint of a threat in decades.
Overall I think mainstream Japan is quite embarressed by the far right thugs that operate freely in their country, but feel unable to break the taboo and confront the cloak of nationalism that they hide behind.
It's perhaps the greatest blemish on my experience in this country, and I think anyone imagining that letting a bunch of brownshirts run amok won't have poisonous effects on democracy needs to wake up.