Wow, follow-up calls? That's a new one on me. I'll add it to my crappy recollection of how the story has progressed.
I cannot for one nanosecond imagine that MLK actually made such calls. Star Trek
would have to be the absolute last thing on MLK's mind, even if he were a rabid fanboy like me.
I mean, seriously: the dude had the FBI investigating him and his ultimate murder wasn't a particularly big surprise given his massive following in what was at the time a very controversial social movement. I don't remember it except as history that I happened to live through, but I'd imagine it to be as much as surprise as if, say, Rush Limbaugh were murdered.
Too bad? Yes. A surprise? Not particularly. The dude must get multiple daily death threats.