I was living just a few miles away from the Ramsey's on 12/26/1996, and read all the newspaper accounts, watched all the TV interviews and specials as well as reading the Medical Examiner's report, Police pads (investigative reports), depositions, visiting the scene and so fourth. I also interviewed people associated with the Ramsey's personally and professionally and had met Patsy Ramsey on several different occasions. The Ramseys killed their daughter - if they did not do so directly, they know who did and witnessed the crime.
Here are several incontrovertible facts from THAT date as I, and many, many others observed them and as reported by the Boulder and Denver newspapers, CNN and the Denver Television & Radio stations:
(1) There had been a snowfall of app. 2" the night of JonBenet's murder - there were NO FOOTPRINTS or tracks of ANY kind in the snow when the Boulder Police arrived, something later confirmed by both the Police, neighbors and Detectives arriving early on the scene.