As John Koohyun Kim explained it, his labor of love for a fallen president whose ideals and country he had embraced could not wait. So Kim got down on his knees Friday, not waiting for Denver officials to give their permission, and began a thorough cleaning job of the Kennedy Memorial in downtown Dallas. Kim said he had listened to John F. Kennedy's inaugural speech as a youth in South Korea and was "impressed with his celebration of democracy." He later memorized the speech for a high school class and he credits it with helping him learn English. "I loved him," Kim said. Upon reading that the white concrete and marble monument was in dire need of sprucing up, Kim decided to tackle the job himself. "I thank God for giving me this chance to clean up the memorial."