The entirety of the evidence is from the Dallas Police,
That’s not true. A lot of the conflicting evidence comes from the Dallas County Sheriff deputies (of Mauser fame) who I believe were told to stand down in the investigation.
how can you tell when the Dallas Police were telling the truth and when were they lying?
How can you tell when
anyone is telling the truth or lying? The preponderance of the testimony evidence is that a bag and bones were on a box next to the SN.
I saw what I thought was a man standing back about 15 feet from the windows and was holding in his arms what appeared to be a hi [sic] powered rifle because it looked like it had a scope on it. He appeared to be holding this at a parade rest sort of position. I mentioned this to my wife and merely made the remark that it must be the secret service [sic] men. This man appeared to be a white man and appeared to have a light colored shirt on, open at the neck. He appeared to be of slender build and appeared to have dark hair.
Not
that observation. This one:
Mr. SPECTER - All right.
You have described seeing someone in another window hanging out. Would you draw a circle and put an "A" beside the window where you say you saw someone hanging out. That is on Exhibit No. 356.
(Witness marking.)
Mr. SPECTER - At about what time was it that you observed someone hanging out of the window that you have marked as window "A"?
Mr. ROWLAND - Again about 12:15 just before I noticed the other man.
Mr. SPECTER - You have marked the double window there. Would you draw the arrow in the red pencil indicating specifically which window it was.
(Witness marking.)
Mr. SPECTER - Will you describe with as much particularity as you can what that man looked like?
Mr. ROWLAND - It seemed to me an elderly Negro, that is about all. I didn't pay very much attention to him.