As I stated, it was suggested as a posibility and just "my scarcely educated $.02". I don't care to debate the post with you.
Have a nice day.
Mel could speak out and express his own opinions on those issues without directing his comments towards his father. In other words, Mel's father (and I'm horribly paraphrasing to make the point clear) says "I don't believe in the Holocaust." Mel says "I do believe in the Holocaust". I think that addresses your concern about being "silent".
What Mel doesn't have to do is say "I disagree with my father about the Holocaust". Anyone obviously can draw that conclusion because of the difference in their opinions, but Mel himself does not directly denigrate his father.