One thing that always cracked me up is how the scene from 6.21 where a robot is showing some citizens around has been changed to a darker tone with the italian dubbing.

In English the robot is just showing around and he seems even pleasant. The group of white-dressed citizens seem to be tourists (considering that one has a camera)

In Italian, the robot, with a much less gentle voice, is saying that this is their new working area they have been "programmed" for (so making it as if the "tourists" are new comers for the job) and that the current personnel will be destroyed because outdated (this said very matter-of-factly). The workers don't seem to take notice of such a grave announcement (and that's because in English they are not threatened with an incoming destruction for being "outdated").

Italian dubbers must have had a different and even more dark and depressing idea on how Lucas' dystopia should be like haha. Machines saying that people are outdated and to be replaced/destroyed.