Secretary of Defense Forrestal and President Kennedy were killed before they could reveal about UFOs

From the end of World War II to maybe 1990 it could be (and often was) fatal to try to reveal anything about UFOs. The people who knew about them understood that this information would destroy cultures on earth both religions and governments. So, people who tried to tell the truth were often killed to suppress this information. There was a time between 1990 and 2001 where a lot of this information was safe enough to come out worldwide when Clinton was president. But that is really the only safe time which ended abruptly by 9-11-01 when the twin towers were brought down by "Terrorists?".