Although the families have since been compensated, no one has ever been tried for the crimes owing to a 1993 amnesty law.
Decked out in red to signify their "Stop Coal" campaign, the protesters chanted and beat drums as they snaked through the former West Germany capital toward the UN centre that will host the 12-day, 196-nation talks, tasked with implementing the landmark Paris Agreement.
Su Changlan, a 47-year-old primary school teacher was first detained in southern Guangdong province on October 26, 2014 after making comments on social media in support of democracy protests in the semi-autonomous city of Hong Kong.
Everywhere from hospitals and bus stations to football grounds, signs have appeared reading: "Where is Santiago Maldonado? The state is responsible."
Civil March For Aleppo to begin Monday morning, with a call for immediate humanitarian access to all besieged areas in Syria
Judge reduces charges against 2 activists arrested for peaceful protest against jailing of 5 other human rights defenders
Israel to identify and deport foreign activists involved in promoting international boycott of Israel
Bahraini police detained a prominent activist during a raid on his home early on Monday morning as part of a wide crackdown on dissent more than five years after the Arab Spring.
NGO's in Congo have demanded the release of two activists in Congo
The EU has expressed concern over the charges against outspoken human rights lawyer Pu Pu Zhiqiang, who has been under arrest since June 2014.
Rasul Jafarov, a free expression and free media advocate and a well-known human rights activist, was arrested in August 2014 and charged with embezzlement, illegal entrepreneurship, tax evasion, abuse of power and forgery.
Oman jails rights activist for three years who wrote letter to Obama