In those days, everybody wore a suit.
One of the many JFK conspiracy theories place Johnson at the center for he absolutely hated the President and the Attorney General. He was a jealous and vindictive man in the same way that Hoover was. He had the motive, power and the means to knock off JFK, RFK, Marilyn and even MLK.
I am not saying he took out all of them but I am sure he took out or approved, very much, the elimination of JFK and RFK.
I agree, LBJ was a monster and nothing NOTHING was going to stand in his way!
I suspect he is roasting on a spit right now.