He had published a book discussing self-immolation protests and other 'politically sensitive' issues.
The burning shows that Tibetan resistance to Chinese rule 'remains undimmed.'
Authorities call in security forces as residents raise environmental concerns.
Both men had worked to promote the use of the Tibetan language.
A protester is released a year after taking part in a demonstration attacked by police.
A petition raises concerns that the city's traditional architecture is disappearing.
He had written on topics considered politically sensitive by China.
The county government says the land in Gansu was sold illegally.
The Tibetan monk was found with recordings by the Dalai Lama.
Water sources are affected as Beijing steps up mining activities to fuel growth.
His sentence had been extended for engaging in political activism while jailed.
News of his release had been concealed for months.