김구
Soon after taking office, Rhee enacted laws that severely curtailed political dissent. There was much controversy between Rhee and his leftist opponents. Allegedly, many of the leftist opponents were arrested and in some cases killed. The most controversial issue has been Kim Gu's assassination. On 26 June 1949, Kim Gu was assassinated by Ahn Doo-hee, who confessed that he assassinated Kim Gu by the order of Kim Chang-ryong. The assassin was described by the British historian Max Hastings as one of Rhee's "creatures". It soon became apparent that Rhee was a dictator. He allowed the internal security force (headed by his right-hand man, Kim Chang-ryong) to detain and torture suspected communists and North Korean agents. His government also oversaw several massacres, including the suppression of the Jeju uprising on Jeju island, of which South Korea's Truth Commission reported 14,373 victims, 86% at the hands of the security forces and 13.9% at the hands of communist rebels, and the Mungyeong Massacre.