In any media, people only see what they want. There's a psychological term for this, Motivated Reasoning.
https://en.wikipedia.org/wiki/Motivated_reasoning
If you want to break this you have to know the person and ask key questions afterwards. Their distortion field is held together by beliefs and principles, not empirical analysis.
For instance, for my father, the question "how is this treating people responsibly? How can we expect the behavior of those guards to be held accountable?" would pierce this ... but really you have to know how the person doing motivated reasoning thinks.
So does this apply to every single person all the time?
His Dad will be smart enough to know these questions are trying to set him up. Maybe try having a real conversation and not trying to change his mind. After all, there is a good chance you will be that Dad in the future (no matter how hard you tell yourself you won't be). Tell me how I now.