One conspiracy theory has undergirded both, however: that there was a second shooter, positioned on a nearby water tower. A modern version of the discredited grassy knoll conspiracy theory ...

There is no evidence of a second shooter. Reports from local law enforcement, the U.S. Secret Service, journalists at the event, eye witnesses and hundreds of hours of social media video show ...

A second shooter: One of the explosive finds in the files in the evidence supporting the theory that there was a second shooter – something that has long been debated. The Warren Commission ...