What is the fine-grained topic of the following text: The Circassian journalist says that members of her nation have long been aware of the possibilities that social networks provide but that their power was most clearly manifested last week when Circassians in various countries marked the Day of the Circassian Flag and came together in virtual space (caucasustimes.com/ru/cherkesskie-seti/). Only return the topic.
Circassians using social networks to celebrate the Day of the Circassian Flag in virtual space.