Park Sang-hak, center, a refugee from the North who runs the group Fighters for a Free North Korea from a small Seoul office, and South Korean conservative activists prepare to release balloons bearing leaflets condemning the North Korean leader during an anti-North Korea rally against the 99th anniversary of Kim Il Sung's birth, called "The Day of the Sun," at the Imjingak Pavilion near the border village of Panmunjom in Paju, South Korea, on April 15, 2011. South Korea's Constitutional Court on Tuesday, Sept. 26, 2023, struck down a 2020 law that criminalized the sending of anti-Pyongyang propaganda leaflets to North Korea, calling it an excessive restriction on free speech. The balloons read "Overthrow Kim Jong Il's dictatorship." (AP Photo/Lee Jin-man, File)