These articles give some idea of the murder that will not rest. For fifty years people have wondered what happened. Could Oswald have acted alone, was President Johnson involved, was the mafia, the CIA, the Russians, the Cubans, Texas politicians. Is the Warren report the last word on the subject. One of these articles says he doesn't know what happened, but it wasn't Oswald because he had no motive.
However, recent things that have happened in the world say a motive is not always needed. Besides, for Oswald, the notoriety could have been motive enough. The rumors of conspiracy theory will never go away with regards to the death of President Kennedy.