The conspiracy: Is JFK dead? Yes, he was shot in Dallas

I was in my first semester at university and was on a bus heading to visit my brother in North Dakota for the Thanksgiving break.
Two women got on the bus and one asked the other who was the last president who was shot. Her friend replied Abraham Lincoln. William McKinley had been shot in 1901 and I thought to myself that it was extraordinary that a president was actually assassinated in the 20th century.