Further, forget what the law says and whether their caste is patriarchal or matriarchal. To the extent that one of his parents is a Christian, he is not a Hindu.
Secondly, their family practises Christianity. It is a fact. They promote Christianity and they help organizations propagating Christianity. These are well-known facts.
Finally, this is not the first time Mr. Vayalar Ravi is involved in such controversies. It is his hobby.