I would not hate and disrespect the murderer's son. I would have a grudge against the murderer. Of course, I am entitled to my reservations of him, as he may have been brought up in a peculiar way (his dad being a murderer). However, suspicion and expectations often work in ways that serve themselves. That is, if I expect someone to be bad, he will most likely treat me badly because I expected him to be bad. It is the initial disrespect that sets off the snowball of disrespect. For a free nation, it is even less likely that these "fathering effects" will pass on to the next generation, so it is simply not worth being suspicious. It is much more beneficial for both parties to forget the sunk cost (something that cannot be recovered), and work for the future.
If there is misinformation, then fix it and report it. Mind you, China is certainly not immune from charges of misinformation either.