The first was reactivated by Twitter after their owners complied with Twitter's recent changes in fake accounts policy. Apparently it wasn't obvious enough that it was not the official account (really?), so they changed the full name from "Nicolas Sarkozy" to "Nicolas Sarkozy Fake".

Of course, as long as Mr. Sarkozy was not a declared candidate to french elections, these accounts were all ok... Well that's (french?) politics at work for you.

For the others, it's just plain state-censorship unless I'm missing something here.

Some accounts could have triggered some of the auto-suspend rules due to spam-like behavior.