All LBJ had to do was drop the "will no one rid me of this meddlesome priest?" line and there were plenty of people/agencies/groups more than willing to facilitate the assassination.
LBJ was a sleazy bully. His Great Society 'legacy' is still wrecking black society across America.
I have no doubt about that.
When I lived in Chicago when MLK, Jr. was killed, they cancelled all the leaves for the guards at Cook County Jail. One black Deputy, because he had a good job, he was able to get a mortgage on the 4-flat. He lived on 2nd floor. When he opened the door to go to work there was a black guy stand on the landing below. He was ready to light a Molotov cocktail.
He said to the black guy, "What choo think you doing?" The black guy said, "I'll show whitey. I'm gonna burn down this building." The black guard pulled his pistol and killed him right where he was standing.
I knew a white guy that was a guard at the Jail. When the black guard told him what he had done, he said to him, "How are you going to explain that?"
The black guard said, "When they come along and pick him up, it's just another dead nigger." The good blacks call the bad blacks niggers too. ;)