I do hope that people will be consistent in how they refer to groups such as Christian militias and Islamic terrorists. We can either acknowledge that these are groups that understand themselves, rightly or wrongly, to be Christian or Muslim, and refer to them as such. Or we can recognize the tension between the aims and actions of these groups and the mainstream of these religious traditions and Scriptures, and place “Christian” and “Islamic” in quotation marks. But I see little justification for not doing one or the other consistently in both cases.
In light of all this, I encourage all readers to use their scare quotes in a fair and equitable manner!