When I was visiting Moscow last April, I saw an Orthodox family with about 5 young children coming out of church on Easter Sunday.
It is especially difficult to raise a large family in Moscow because apartments are so cramped and small and housing is very, very expensive.
What do you think was the meaning of this? If they were Christian converts, they would be under no obligation to dress recognizeably as Orthodox Jews. If they were observant Jews, why would they be there on Easter, especially with the children and all the explanations required?