It's rare enough to require aggressive Googling. What should that tell you?
Not it's not that rare actually, it's been on the news quite a bit here. The BBC has been following the stories of the Buddhist violence in Myanmar for a while. There is also anti Muslim demos in Sri Lanka but Myanmar is a bad situation. these are all reported on our main news.
BBC News - Why is there communal violence in Myanmar
Fear shock among Sri Lankan Muslims in aftermath of Buddhist mob violence - CNN.com