Here’s a conspiracy theory of my own invention. Why did Jack Ruby kill Lee Harvey Oswald? Readers under the age of 80 may need to know that Jack Ruby was a Dallas bar owner and small-time crook who shot dead Oswald, the alleged assassin of President John F. Kennedy. Nobody has ever thought that Ruby did this out of patriotic indignation. Somebody wanted to silence Oswald for good, and Ruby was the instrument they chose to do so.
