In an Instagram post on Wednesday, Robert F. Kennedy Jr. accused security guard and Lockheed Aircraft employee Cesar Eugene Thane of delivering the fatal blow to his father Robert Kennedy. The social media post was published on the day of Thane’s death in the Philippines. “Thane Eugene Cesar died today in the Philippines. Compelling evidence suggests that Cesar murdered my father,” RFK Jr. wrote. “On June 5, 1968, Cesar, an employee in a classified section of Lockheed’s Burbank facility, was moonlighting as a security guard at the Ambassador Hotel,” he continued. “He had landed the job about one week earlier....