I know you were generalizing, but the thing is most Christians in turkey as well as other predominantly Muslim countries would not consider themselves catholic. They would consider themselves Coptic Christians.
I was born and raised catholic and I have been to many weddings of Coptic Christians, mostly Armenians living with Turkish roots, or Coptic Christians from Egypt. And they are quite distinctly different from Catholics.
Hate crimes against Armenians, I would think would have more to do with being Armenian and less to do with religion. I'm guessing the women killed who were Armenian were known of Armenian origin because they may have lived in an Armenian neighborhood in Istanbul.
I don't think this has anything to do with Sarai's murder. Additionally I just want to add that hate crimes against Armenians in turkey today are extremely rare. And many many Armenians live very happy and peacefully in turkey. I actually know an old Armenian grandmother who moved to the US far later in life, who insists Istanbul is the best place for Armenians to grow up.
The Armenian Turkish conflict is a very complicated and very often misunderstood part of Turkish history. What happened, is awful, and very very sad, but it also happened before the Turkish Republic was founded, and happened under ottoman rule, many Turks do not identify it as being part of Turkish history, but part of ottoman history. When the republic was founded in 1923, the country, Ataturk specifically, went through great pains to modernize turkey, to move it away from barbaric ottoman images, he changed the alphabet to roman letters, secularized the country, and tried to make it more Europeanized. Turks today tend to focus the roots from this point forward, and regardless of if it is right or not sometimes neglect certain aspects of their countries history, that happened before that. That includes what happened to the Armenians. They do not learn about it in school, so most Turks grow up having no clue about that part of history. (I know that could be considered a whole other issue).
http://www.al-monitor.com/pulse/ori...ul-racist-attacks-armenian-women-samatya.html