Do you really expect him to call his Dad a liar?
From a link you posted.
When asked by an interviewer in early 2004 whether the Holocaust happened, the actor / director / producer responded that some of his best friends ''have numbers on their arms,'' then added: ''Yes, of course. Atrocities happened. War is horrible. The Second World War killed tens of millions of people. Some of them were Jews in concentration camps.''
So, which is true? That he believes Jews died in concentration camps, or that his dad, who denied the Holocaust ever happened, never told a lie?