If I were to guess, I'd guess it's Islam. I come from a region where we have a sizeable Muslim minority, and hardly a day goes by without some outrage or the other which hurts their sensibilities (ban calls for prayers? ban praying in the middle of the street during rush hour? serve bacon/ham in school lunches? etc. etc.); regardless of the fact that people have lived this way for millennia, and Muslims just showed up in the last few decades, but insist on bending the rest of the society to their norms.