Ruling in the case of MGM v. Grokster.
Read it here.

If you have just eaten or otherwise have a weak stomach, make sure to skip straight to Justice Breyer’s opinion (p. 38), as it is much more digestible.

Edit: Not that it has any bearing, but I think it is interesting that when I visited the MGM website, the movies being advertised are all piece of shit remakes/reimaginings (Amityville Horror, Pink Panther, Beauty Shop).