One of the activists, Mr Apisit Sapnapapant, argued that the plaque was regarded as an artifact in accordance with Section 4 of the archaeological law and anyone who stole the plaque would face theft charge for stealing state property.
Another activist, Ms Nattha Mahatthana, said that even though the plaque was not registered as an artifact, it had historical significance and was a symbol of democracy in Thailand. And for that matter, she insisted that the general public had the right to file complaint to the police to track down the culprit or culprits and to retrieve the missing plaque.
Ms Nattha claimed that the plaque might be stolen in the first week of April, noting that shortly before that a group of students saw the plaque while on an inspection trip as part of their research.
After having lodged the complaint with the police, the activist group then moved to the City Hall to demand a look of the CCTV footages at the Royal Plaza, hoping that the culprit or culprits could be detected.