The Day Things Changed

It was supposed to be just another day in London, in December 2012. Anais was on the bus going to buy some fabric when she got a notification from her friend Kelsang tagging her in a YouTube video and sharing it on her wall. There was nothing unusual about it. Both of them shared stuff on each others’ wall regularly. Anais opened the video and when she realized the reason why her friend had shared the video with her, she froze. But why?