It was no dream .....
Nov. 22, 1963 was my 19th birthday ... I had the day off and was sacked out (open bay berthing [Quonset hut] - temp-duty assignment) ...
OH - I forgot - I had a nightmare ......... NOT! (never happened)...I was awakened by someone shaking me to tell me that the President of the United States had just been shot. I told him he was full of sh#t .. rolled over and tried to go to sleep to no avail. He again shook me and pointed to television where they were showing the footage for the second time.
IT WAS NO DREAM ... things have not been the same since (that includes 9/11).
We lost a great American and one of our greatest Presidents. Without his assassination, history would very well have turned out differently.
Johnson, Nixon, cut and run from Vietnam, Watergate, resignation, Ford, repatriation of Canadian cowards. etc, etc, etc - to today.
I will leave it to others to count the other ways that history would have unraveled differently. I am quite sure that you can list them as easy as I can. It makes no difference whether you are Republican or Democrat - there are obvious circumstances that would have turned out differently IF Kennedy hadn't been assassinated.