Truth time Le Harvey Oswald killed Kennedy the Louisiana mob family paid him to do it and the feds under the direction of J Edgar Hoover covered up all the evidence of conspiracy there was no third shot no grassy Noll and we can never prove it definitively because when the feds cover something up there is no proof there pro's.
Lest examine the evidence One Oswald's father was a mob associate the day of the shouting Oswald entered a mob controlled business and was given a soot case full of money in classic mob cover up style a fellow mob associate Jack Ruby killed Oswald before he could be questioned there by severing any direct link to the first murder. Finally Motive the Louisiana mob Boss hated the Kennedy's for illegally capturing him and droping him off in the middle of the Amazon rain forest denying him all his constitutional rights in the process. He swore revenge and in mob terms that is always a death sentence when it comes to honor and the mob could be the pope and turn up dead.
J edger hover despised the Kennedy's
one for attacking the mob that heed been denying for years ( and probably working with)
two for threatening his near totalitarian control of the FBI and for being spoiled rich no it all yuppies.
In conclusion Lee Harvey Oswald Killed Kennedy alone and by himself, but he was ordered to do it and this is what was covered up so in that sense there was a conspiracy.
But then Kennedy's were guilty of denial of rights, vote tampering, murder, conspiracy to murder, bootlegging, corruption, and being spoiled rich no it all yuppies. So in my opinion the mob did us a favor.