It is unnecessary to retell the horrific story of the disgusting martyrdom of the 21 Coptic men in Libya last week, gloatingly displayed to the world in an online video of the sort that
ISIS Daesh* is notorious for producing. Though I have not watched it, those who have say that many of the martyrs had the name of Jesus on their lips as they died. Despite the hair-splitting of the SSPX, whether or not their murder was in revenge for the killing of a senior jihadist is irrelevant: they were murdered because they were Christian, and in hatred of Christ.
*(a name hated by the ISIS jihadists themselves and so most appropriate to give them)
The second objection of the SSPX to granting the title of martyr to the 21 Coptic brethren is that the Copts are heretics. This objection has more weight to it, but how relevant is it to this situation?