I believe that Oswald was there to prevent the assassination from happening. And that there were two Oswalds, making him the perfect fall guy. MrChrillemannen on Youtube has video about 'the two oswalds', Lee Oswald and Harvey Oswald - https://www.youtube.com/watch?v=PM8pDhviTo8 . The bad one was likely the one who shot JD Tippit, went to the embassies in Mexico, Cuba Helsinki, Russia, etc.... The good one wanted to stop the assassination, was the real hero, was anti-Cuba.

He was one of many who knew the truth and were silenced for it. His own words are "I'm a patsy". Sadly, since we can't get his testimony, we won't ever know the truth.

If this is true, then he is a true hero. Judyth Vary Baker, his ex gf from new orleans, believes this.