Waiting for new chapters takes a long time, so I tend to find details others would overlook.
In Volume 7, during Sanji's flashback, right after Zeff says "Take everything of value", there's a panel of his crew attacking the passengers of Oribit. One guy who's kicking another guy in the face has a manji band on his arm. At first glance, it looks like the Swastika band that the SS wore during WW II. It's even black with a white circle around the Manji.
This question is mainly for our German folks: Did the censors in Germany catch this? If not, that's a fantastic find.
Note: I never post pictures or links because you can't really notice this stuff in scanlations. Too low quality. You actually have to look in the tankos to see this kind of thing.