Wikipedia articles should not be used to promote an anti-victim POV.  More often than not guilty parties deny any wrongdoing and that does not mean that articles should be edited to delete or dispute any claims made by alleged victims unless these claims, if reputable, can be proven false with empirical evidence or consistent reasoning.  I see no reason or empirical evidence to deny the accusations made by the "son" in this case.  If his father was violent then he is telling the truth.  If his father was not violent at all then the parents still raised a compulsive liar.  In both cases there is reason to believe poor parenting. Someone saying "No I didn't" is simply a verbal denial of allegations, not evidence to the contrary of the allegations.