Walt was a member of the American Nazi Party, wasn't he?

No, but I think he was a friend of Henry Ford. (Or am I thinking of Ray Kroc?) And he may have been a fellow traveller; apparently an early Disney cartoon had a Yiddish-accented wolf preying on three little Aryan pigs or something similar. (Mind you, it'd be hard to prove, given how copyright law allows Disney to obliterate such episodes from the historical record.)

Anyway, IMHO, Disney are scumbags. Worse than Vivendi Universal, much worse than AOLTW, and perhaps a nose ahead of (or behind, depending on how you look at it) News Corp. If they had their way, the world would become a totalitarian dystopia with no hope of escape from their reality, though with really shiny merchandise.

Apparently, every time it looks like the sunset clause on copyright looks like putting Mickey Mouse into the public domain, Disney manage to lobby the US Congress to increase the amount of time copyrights persist for...

Yes.

The US Supreme Court is currently looking at whether or not this is constitutional. Though I wouldn't say that there's a big chance of them ruling against it (too much of an attack on the foundation of corporate capitalism); but there's always hope...