Religion definitely is not an appropriate topic of inquiry because Article VI, Section 3, the No Religious Test Clause of the Constitution, prohibits using any aspect of religion as a preferential or discriminatory qualification for public office.
This clause has been interpreted to mean that no federal employee or officeholder can be required to adhere to the beliefs of any religion, or to swear an allegiance or oath to any deity. The words "So help me God," spoken at the end of many Oaths of Office, are not an explicit part of the oath, and are uttered voluntarily.
it is a religion that is common in one's community or background
Yes the incas did have a religion the main religious background was the sun.
He is from a Christian background.
He was Roman Catholic by upbringing - but why does the question assume that it was his religion and 'background' that 'made' him kill Jews? See related question.
Art and religion.
They are both Christian, Dec is from a Catholic background.
No. He is not Jewish either in his ethnic background or in his religion.
No. He is not Jewish either in his ethnic background or in his religion.
the person's parents or grandparents information, religion what they did etc.
= Imran khans religion = Imran khans religion is Islam
Yes, because you have all the right to believe in what ever you want. Your parents have no right to get involve in this problem because that is your religion not theirs.
It is likely that David Cook has a Catholic background. He does not speak about religion very much and he has never publicly stated a preference.