President Lee Jae Myung speaks during a government ministry briefing at Cheong Wa Dae, Thursday. Yonhap

President Lee Jae Myung on Friday reiterated his plan to designate Dec. 3 as a day of people's sovereignty that would mark the anniversary of former President Yoon Suk Yeol's failed imposition of martial law.

In a Facebook post marking the 78th Constitution Day, Lee pledged to designate Dec. 3 as a legal public holiday so that the meaning and spirit of the day — when ordinary citizens voluntarily sought to block the unexpected martial law — could be fully passed down to future generations.

Lee made a similar proposal last year to mark the first anniversary of the political crisis triggered by Yoon's declaration of martial law.

"On Dec. 3, 2024, the martial law declared in the middle of the night reminded all of us that the threat to democracy is by no means a thing of the past, but a reality that could happen again at any time in today's Republic of Korea," Lee said in the post, referring to the country by its official name.