: ♪ ♪ ♪ ♪ >> narrator: as a child, namkyi watched as protests against china escalated.): >> narrator: in 2008, protests by monks led to widespread demonstrations that were violently put down by chinese authorities. (people shouting) >> namkyi: ♪ ♪ >> narrator: after the crackdown, some tibetans resorted to extreme acts of protest. (people screaming) human rights organizations say around 160 tibetans have burned themselves alive since 2009. despite china's tight control, occasionally footage of these protests has surfaced. this one, from 2012, shows 22-year-old ngawang norphel and his friend. >> (speaking tibetan): ♪ ♪ >> namkyi: >> narrator: in 2015, she started her own protest outside a monastery in the town of ngawa. >> namkyi: ♪ ♪ >> narrator: the protest was filmed and later posted online. >> namkyi: ♪ ♪ >> narrator: she was 15 at the time. the police arrested her, and she was charged with "separatist acts against the nation." >> namkyi: >> narrator: during her time in prison, she says a communist party official subjected her to political re-education sessions. >> n