Bono has a new opponent: Liroy, a tattooed Polish rapper whose hits include ‘Jak Tu Sie Nie Wkurwic’ (‘How can I not get pissed off?’). He was outraged when the U2 singer recently claimed that Poland is succumbing to ‘hyper-nationalism’. In an open letter Liroy wrote: ‘Your knowledge on this subject must be based on a rather questionable source and is far from the truth.