Who murdered President Kennedy?

In order to verify the exact cause of Kennedy's death, Ron Rice moved from Indiana to Dallas and opened a "conspiracy museum", which displayed many briefings, photos, telegrams and mysterious deaths of many potential witnesses related to Kennedy's assassination, to prove that Lee Harvey Oswald, the "assassin" identified by the government at that time, was not a person. On the afternoon of Kennedy's assassination 1: 30, the police arrested Oswald in a cinema. However, only on the third day, Oswald, who was still in custody, was shot and killed by a man named jack ruby in the basement of the police station. Rice questioned the "assassin" targeted by the government. "My opinion is that four people (to Kennedy) fired six shots, and Oswald did not participate. He is innocent. (The then vice president) lyndon johnson was the mastermind behind the assassination. " Indeed, in the 40 years after Kennedy's assassination, there were endless rumors about his death, and it seems that few people really believed the government's explanation at that time.