On 5 October 1973, Thirayuth Bunmi, the former secretary-general of the
National Student Center of Thailand (NSCT), along with other supporters, held a press
conference on Sanam Luang across from Thammasat University calling for the
promulgation of a constitution. At the press conference Thirayuth released the names
of one hundred prominent academic and government figures who signed a petition in
support of a constitution. While marching through Bangkok, on 6 October 1973,