The Muang People Movement group and the Wilar Party gathered at Tha Pae Gate on Sunday in a cycling activity aimed at raising awareness about and sending support to political prisoners.
The gathering called for justice for political prisoners and signs were held, photos of those arrested featured and a group cycled around the moat.
The group says that it will continue to organise peaceful activities to keep the pressure up to the government as well as to keep the spirits of those detained high.