What popular activity has one Muslim cleric declared a sin?

Taking a photo of oneself means succumbing to pride, arrogance and ostentation – all sins, according to a young Indonesian cleric named Felix Siauw who declared such on Twitter. 

“These days many Muslim women are taking selfies without shame,” Siauw wrote. “There are usually nine frames in one photo with facial poses that are just – my goodness – where’s the purity in women?”

The criticism drew ire from Indonesian men and women who have begun tweeting photos of themselves under the hashtag #selfie4siauw.