Some speculate that Ruby may have hoped to kill Oswald that night at the police station press conference.

Ruby's explanation for killing Oswald would be "exposed .

I was framed to kill Oswald.

Jack Ruby, who was 55 when he died on Jan. 3, 1967, had been convicted of murder and sentenced to death for killing Oswald.

Why, then, did his brother kill Oswald?

When Ruby killed Oswald, everything settled down overnight.

And it still knows nothing about the way Pigeon used Ruby to kill Oswald.

Jack Ruby shot and killed Oswald on live television before he could be tried.

As the conspiracy theory goes, Ruby was sent by the mob to kill Oswald before he could talk.

If grassy knoll guy did it, killing Oswald in 58 wouldn't stop the assassination.