The following video was taken in a protest of illegal immigrants in Brussels. The protesters are shouting 'free our friends (comrades)' and then 'allah ackbar'.
In the past few days the Brussels suburb of Elsene (Ixelles), has been the focus of illegal immigrant protests. About 200 illegal immigrants were chased out of an Electrabel building in the city. The immigrants then took over an INSAS college building, not far from it. One hundred managed to break into the building, while police held the 100 others off. The immigrants spent the night in a ULB university sports hall.
Sources: HLN (Dutch), h/t François Desouche