Kim Gu (김구, also known as Kim Ku) is known as a true patriot in Korea. He was born Kim Chang-ahm (김창암) on August 29, 1876.
He was the head of the police bureau of the Korean Provisional Government in Shanghai. He and Kim Kyu-shik, along with other Koreans in the South, were actively working towards reconciliation with North Korea by engaging in talks with Kim Il-sung and Kim Tu-bong.
On June 26, 1949, Kim Gu was assassinated by Ahn Doo-hee (안두희), a Korean lieutenant who was later revealed to be working with the fascist, anti-communist group the Baek-in-sa (백의사), which was funded by the U.S. Counter-Intelligence Corps (CIC).
Beat Pak Eun-sik to death after he attacked Syngman Rhee (The Korean Communist Movement, 1918-1948, page 13)
Assassin of Kim Gu Had Links Both to U.S. and to Terror Unit by Jung Chang-hyun
Ahn Doo-hee, who assassinated Kim Gu, president of Korea’s Interim Government in Shanghai during Japanese colonial rule, was an agent for both the U.S. Counter Intelligence Corps and an ultra-right terrorist group known as “Baekuisa,” a declassified document of the U.S. National Archives and Records Administration showed.
https://tw-koreanhistory.tumblr.com/post/139580715449/kim-gus-assassin-ahn-doo-whi-was-an-american
https://web.archive.org/web/20070418012454/http://www.kimsoft.com/2002/cilley.htm