continue the forward thrust of america that he began. [ applause ] ♪ >> the people of europe just cannot believe that a lone avenger made his way into a major police station and killed without difficulty the most celebrated and infamous criminal in the united states. >> one of the most important things that happened after oswald's murder was that we were forever denied the why. i mean, people at the time believed he did it. the question was, why? >> there are questions continually coming up about the possibility of an international plot. >> there is still all this thought that the russians might be behind it or cuba might be behind it. johnson sees there's a real danger in that. you want to put these rumors to rest. >> investigations into all the