This URL should work.
From the article,
“Earlier reports, citing a survivor’s account as told to relatives, said that Harper Mercer asked people whether they were Christian before firing. But J.J. Vicari, who was in the classroom next to the where the attack occurred, said he never heard the gunman ask about religion and never even heard the gunman’s voice.”
Why would he? I assume the walls are not paper thin and that gunfire is loud. But the media instead of taking the word of someone in the same room will go with this guys account of what he did not hear.
I don't think he was a fan because they were Catholic but because they were successful long-term terrorists.