Many people, including myself, do not believe that he really did any of the activity related to the assassination attempts. Demonstrably corrupt law enforcement agents had the opportunity to do it all themselves and it would be typical behaviour for those agencies. He is (and was) politically passionate about non-violence and it would go against everything he stood for. I cannot believe he would do it. What do you mean "openly"?
He wrote about them extensively in his journals - journals he could have disclaimed if they were faked but were obviously not.
I can't say anything about these journals because I cant even remember anything about them. It certainly isn't obvious to me, since the case is incredibly complex and objectively fraught with corruption