The problems within Croatian football made international headlines during Euro 2016, a topic explored by the BBC on August 27, 2016.
If the Maksimir Stadium were a choir, the Bad Blue Boys would be the conductors.
Perched high up behind one goal, their strident cry of “Dinamo!” receives a lusty response of “Zagreb!” from the other three sides of the ground.
They are among the best-known fan groups in Europe and are preparing for another a taste of the Champions League group stage.
It is all a far cry from the disgraceful scenes of violence involving Croatian fans at Euro 2016, when flares were thrown on to the pitch and hooligans appeared to be sabotaging their own team.