Did Lee Harvey Oswald act alone?

[Lincoln Republican]

No.

We all know that both John F Kennedy and Robert F Kennedy had affairs with actress Marilyn Monroe.

We also know that both JFK and RFK broke off their relationships with MM when she was becoming a liability, and that she committed suicide.

I believe that Marilyn Monroe's housekeeper hired a shooter to assassinate JFK, and possibly RFK as well.

[Lincoln Republican]

can't tell if serious

Well, I always love a good conspiracy theory. 

[Lincoln Republican]

Did he act alone?  Yes
Was there a conspiracy? Probably
I don't buy the CIA+Cuba+Oilman stuff though.

You can't deny the oilman angle in this. Oswald worked at the Texas Depository at the time. It was owned by a guy named D.H.Byrd (David Harold Byrd). He was friends with the guys that were part of the  Big Oil group in Dallas, along with Clint Murchison, H. H. Hunt and Sid Richardson. Big backers of LBJ'S Election campaigns.

So you are, indirectly, linking the assassination to LBJ?

[Lincoln Republican]

Could aliens (extraterrestrial beings) have had anything to do with the JFK assassination?