On 10 December 1979, pro-democracy activists clashed with police in Kaohsiung, Taiwan.

The incident, which happened during Taiwan's martial law period, paved the way for the transition to democracy.

Rachel Naylor speaks to Yao Chia-wen, who was jailed for 12 years for his involvement.

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(Photo: The Kaohsiung Incident on 10 December 1979. Credit: AP Photo / Yueh-Kang Pan)