Hey Backes! Did you hear me? I asked you what caused the odd-shaped shadow over the thumb.
It can't be from the window frame because that wouldn't cast a shadow shaped like that. So, what is casting it?
If you take the 5th, it will be taken the same way it is in court, as presumptive evidence of guilt: yours. You protect the killers of JFK every day of your life; it's what you do.