Yeah at the game, the Italians brought old Croatian communist flags and chanted communist songs. The game was played at Livorno, so it was not surprising at all.
Anyways, the Croatians are pissed off when you tell them that they are commies.
So the Croatians, knowing that Livorno fans are communists and they were ashamed of their fascist past, they decided to form a human Swastika to insult them and piss them off.
Now, the UEFA went nuts on the Croatian FA because they thought that the Cros supported that and so on.