Perhaps an homage to the sixties radicals who spelled our country
Amerika (I think, perhaps, to evoke the word swastika)

Interesting. I never really thought about why it was spelt differently. I assumed it had been in German, and had just been translated as such, but I never wondered why.

Actually, they called themselves "Die Erziehungsberechtigten" which cannot be properly translated into English. It's a juridical term and the English equivalent would be "legal guardian". But a direct translation would be "authorized to educate". Which is basically an educator (but the double meaning is lost).
Anyway, this doesn't answer the original question at all. I guess it was just to give the title a foreign feel to it.

A year is a long time.
Not so long. Just once around the sun.

Because if you had seen the film you would realize that is what Jan and Peter call their 'terroist' group.
Kaneda what can you see?

Because the movie seems to have a dumb marketing in the englisch speaking world, the english trailer really sucks too.