South Koreans urge their neighbors to revolt against the North Korean regime in the wake of Kim Jong Il's death.<br/> About 50 conservatives rally in Seoul to denounce Kim, who according to state media died of a heart attack Saturday.<br/> (SOUNDBITE) (Korean) RALLY LEADER BONG TAE-HONG SAYING:<br/> "Kim Jong-il was a dictator who crushed North Koreans to death and deprived the people of their freedom and human rights. And he was a homicidal devil who killed or injured South Koreans with various kinds of provocations."<br/> Little is known about Kim's son and successor Kim Jung-un.<br/> Residents of the south's Yeonpyeong Island, which the North shelled last year, fear relations between the countries will deteriorate.<br/> (SOUNDBITE) (Korean) 78-YEAR-OLD KIM YONG-RYO SAYING:<br/> "Well, I'd like them to stay calm after his death. But I am worried - whether they would shell our island again."<br/> The North attacked South Korea twice in 2010, killing 50 people.<br/> Although relations have improved somewhat since then, tourists in the demilitarized zone between the countries are also worried.<br/> (SOUNDBITE) (Korean) 43-YEAR-OLD TOURIST PARK KYUNG-WAN SAYING:<br/> "Under the chaotic situation, we don't know what North Korea will do in the future and I'm worried about a possible coup in the country."<br/> Some however are hopeful the leadership change could open the door for reconciliation between the countries.<br/> Lindsey Parietti, Reuters