Was LBJ responsible for JFK’s death?

Sadie sends this along.  I doubt there’s anything to it, but it is an interesting story, anyway:


Many people have suspected that LBJ was behind the killing of JFK. Johnson was one of the biggest scumbags in American politics. He was crooked and dirty. Plus, he despised JFK who was his rival for the 1960 Democratic nomination. One
of the people who suspected LBJ’s role in JFK’s killing was none other than his widow Jackie Onassis. She had an interview recorded that she wanted released after her death. In these tapes, she is convinced LBJ was responsible.