Everybody's heard about well known rivalries between OC groups such as the one between the Mexican Mafia and Nuestra Familia . Yet there are other rivalries that are more underrated , which shall be the focus of this thread .

I'll start off with the alleged rivalry between Serbian and Albanian OC groups . It's been written that relations between Albanian and Serbian OC groups during the Balkan wars were pretty tense , to the point that the Albanians only stopped blocking arms shipments to Yugoslavia when Francesco Schiavone ( who was allegedly on good terms with both sides ) asked or told them to . Is there any truth to this claim at all ? How do Serbian and Albanian OC groups get along right now ?