While I don't believe in a conspiracy on 9-11, or that Princess Diana was murdered or that Elvis is working at Burger King or that Hitler is living in Argentina, I do still believe that John Kennedy was killed as a result of a conspiracy.
Someone did a thread on here a while ago about the subject and the point that's always stuck out in my mind was that the bullet wound in his throat was viewed as an entrance wound by the doctors. Since Oswald was to the back, it would have been impossible for him to make the shot. Plus 3 shots in about 6 seconds? While not impossible, I think it's highly improbable.
Several years ago, I went to the local library and read a great portion of the Warren Report. I found it akin to reading Insight on the Scriptures: long, boring as hell, extremely slanted and intolerant of any other possible conclusion other than the one they've arrived at. Plenty of eye witnesses said Oswald and Jack Ruby knew each other, yet I distinctly remember reading in the Warren Report that they 'could find no witnesses' that the two ever knew each other.
Another question I've always had is: Why would Oswald, a supposed Communist Sympathizer, want to kill a president who was, by some extremists, also viewed as a Communist sympathizer? Kennedy pissed alot of powerful people off when he refused to give aid to the CIA's Bay of Pigs invasion of Cuba and also when he refused to start bombing Cuba during the Cuban Missle Crisis. Why the hell would Oswald want to see Kennedy dead, because then you're left with Lyndon Johnson who most certainly was not a Communist sympathizer and god only knows what he would do.
There were other powerful factions that John Kennedy pissed off in the early 1960s. US Steel was preparing to increase the price of steel (I think it was in 1961) and Kennedy told them not to if they wanted to still get the government contracts. He said they were making an excellent profit already and the increase in price was not necessary. US Steel agreed and did not increase the price. The government contracts were awarded and they went and increased the price. Kennedy got pissed off, yanked the contracts and gave them to a smaller steel company that had not increased their prices. Something tells me that that probably didn't sit too well with the top executives at US Steel.
He was also looking at closing the tax loop-holes that the mega-rich oil companies were 'extremely fond of'. In addition, he was going to get the Federal Reserve to start printing U.S. money again, which would have been a huge financial crimp for some of the big banks. And we all know that he had every intension of pulling the troops out of Vietnam which would have really pissed off the military and those who were leaning towards making astronomical profits from the war.
When you add all these things up, I believe that a small group of very wealthy, very powerful men amongst all these factions got together and said 'he's got to go' and the rest is history.
That's my opinion and I'm stickin' to it.