did the CIA sell us out old these years

I was watching NGO channel this evening and they brought out what the CIA knew about whatour enemies was selling out about the Atomic Bomb. In cluding about a man named Knan from Pakeston. Apparently all these years they followed many of these people and apparently knew what the were doing.I always had a suspician that one of their people killed President Kennedy. I have never come up with any proof and now I watch this TV show this evening. If they knew about these events and the people involved why did they not tell anybody about. The secrective Agencies of the American Government are so afraid of telling the American people what is going on. It was not too long ago during the Bush years that they secrectively spying on the American People and it did come out. There was a story about the Defense Department knew about ht 9-11 deal and either did not tell anybody, was part of the deal to get us into war. This isa strange world that we live in when Governments play with war games with the control of people apparently the object. People are such fools to listen to War Mongers and give the control of people to these type of people. I could go on but please people learn what is going besides listening to Rabble Rouser. Just think what a greater country could be if people would learn History and how to apply it to Modern activities. I guess enough of this thing. Don