thats crap...I'm an apoel fan and I know from 2 of my friends that went there what happened.
The fight that broker out was ALSO regarding the APOELLAS banner of which the olympiakos fans took exception for because they do not accept any other teams banners in Karaiskaki. The actual fight though was between Hrysi Avgites and Olympiakos fans....A few Omonia fans were also given a few slaps since their higher intellect instructed them to go into the Olympiakos stadium with Omonia shirts which are exactly the same as Panathinakos shirts!lol!