The fact that they are Christians is significant because it is the reason they are persecuted. Just as the fact that they were Jews or gypsies was the reason they were sent to the death camps.

All cases are "special cases". Being "special" in any society is what is liable to get you persecuted.

I haven't seen anybody here who has said of the persecution of Christians "we deplore it more than any other cultural oppression", or anything remotely like that. (On the other hand I have seen posts saying that they see it as something to be welcomed...)