In a press conference on 25 March, the Foreign Ministry confirmed that China's access to YouTube had been officially blocked since two days earlier. According to Reporters Without Borders, the block was an attempt to stem videos showing Chinese repression of the Tibetan population in the run-up to the 50th anniversary of the Tibetan uprising of 10 March 1959, and to block access to the popular Grass Mud Horse video posted in early March.