The protest began at 4pm at Queen Sirikit Park on Thalang Rd, with around 200 to 300 people joining the event.
Participants held signs and banners, one of which read: “Rebels, traitors, burdens to the country, GET OUT.” Speakers took turns addressing the crowd from a pickup truck.
The group voiced concern over what they described as a national security issue stemming from the leaked conversation.
Pairoj Ruamphanphong, speaking on behalf of the protesters, said the movement was led by a figure known as ‘Khru Konuan’, and that they gathered to show support for Thailand’s military forces stationed along the borders.
Several attendees expressed outrage over the audio clip and accused the Shinawatra family of betraying the nation.
Calls were also made for former Prime Minister Thaksin Shinawatra and current Prime Minister Paetongtarn to be imprisoned, with some urging military intervention.