On June 10, 1987, protests against the death of Park Jong-chul took place in 22 cities across the country.
The protests, which continued for several days after the government's announcement of a favorable constitution on April 13, 1987, escalated nationwide, culminating in the day.
As a result, the then ruling Democratic Party of Korea announced the 6.29 Declaration, which promised to revise the direct election system and take measures for democratization.