What is the fine-grained topic of the following text: About 300 Tibetans gathered on 20 February in the Boudha area of Kathmandu and set fire to animal skins to show solidarity with the people of Tibet who have been taking similar initiatives, and to support the Dalai Lama's recent calls for the preservation of wild life at the Kalachakra in India last month. Only return the topic.
Tibetans in Kathmandu burning animal skins in solidarity with Tibet and Dalai Lama's wildlife preservation calls.