Cardboard Gangsters is an Irish crime drama from writer/director Mark O’Connor (King Of The Travellers) that tells a story familiar to fans of gangland movies, running through all the stereotypes and cliches that come with this oversaturated genre (which tend, in fairness, to be accurate). Thankfully the filmmakers have still managed to create a plausible and socially relevant film with an authentic grittiness and suitably dark premise, one bolstered by a strong lead performance from co-writer John Connors (Love/Hate). On the tough Darndale council estate in Dublin, four twenty-somethings, led by local DJ and hard lad, Jay Connolly (Connors) live…