I am watching the videos and I find that there is a correlation even if the subjects are different.
The characteristics of the people who have the courage to speak the truth:
1) They show their face
2) Their language is not ambigious (E.g It is somewhere on the North, East, South and West)
3) They have nothing to gain by telling the truth
The characteristics of the people who want to tell the truth but nevertheless want to protect their job, families etc are the same except that they show their face in the dark so that you don't recognise them.
I admire the people who speak the truth because they have courage and strength.