Greg F, interested to see that you have abandoned your attempt to justify your comment as sarcasm. Also interested to see that you feel that a quote from Galatianz (sic), a      specifically Christian writing which you appear to loathe, somehow justifies your remark.
You have every right to despise Christianity and Christians and I would defend your right to express that. I would not defend your right to suggest that anyone, of whatever creed or persuasion, somehow deserves to be persecuted.
It seems to me that you made a flip, thoughtless remark that you realise is unacceptable and that is something that we all do on occasion; or you actually meant it. Can't see another alternative. If it's the former withdraw it, if it's the latter at least have the courage to say so - you would like to see Christians slaughtered. Islamic State, Boko Haram and Al Shabaab have made a very promising start.