#BBCtrending: Turkish Twitter war over education
27 November 2013 Last updated at 12:09 GMT
Plans to abolish "prep schools" in Turkey have sparked a huge feud between two of the country's most powerful forces on the micro-blogging website Twitter.
Turkey's Prime Minister Recep Tayyip Erdogan and his AK party have proposed eliminating the schools, which provide private tuition classes to help high school children prepare for university entrance exams.
This has angered supporters of the Gulen movement, which finances and runs many of the schools. Numerous hashtags about the row have been tweeted millions of times over the past week.
#BBCtrending reports that the row points to deeper tensions between Mr Erdogan and the Gulen movement.
Archive footage courtesy British Pathe