BTS members are among the most sensitive and cautious pop stars globally, always taking care not to offend the sentiments of fans. So it took us by surprise when we spotted 'RM apologize to Muslims' trending on Twitter. What could the leader of the biggest K-pop group in the world have done for netizens to demand an apology? Here's what has happened.

RM, real name Kim Namjoon, often shares song recommendations on Instagram. Yesterday, the rapper shared a screenshot of Frank Ocean's song Bad Religion on his Instagram story, which has sparked outrage against the South Korean superstar.