Thailand has been gripped by political unrest since Thaksin Shinawatra, the former prime minister, was forced out of power in a military coup in 2006.
Last year his supporters, known as the red shirt movement, launched mass protests against the government.
At least 90 people were killed and many more went missing in the government crackdown that followed.
The government promised to investigate the entire issue but little progress has been made. Many of the family members of those missing are still awaiting information one year after the protests.
Al Jazeera’s Wayne Hay reports from the Thai capital, Bangkok.