The phrase "horrible atrocities" refers to extremely cruel or terrible actions committed against others, often resulting in great suffering or harm. Full definition
Theists are militant in the face of criticism based on facts and commit horrible atrocities on account of their religious beliefs. (religion.blogs.cnn.com)
The Church is guilty of horrible atrocities such as the Inquisition, genocide, and abuses. (nakedpastor.com)
It's a sad state of affairs when otherwise normal people are willing to defend complete immorality and horrible atrocities just because it's part of their religion. (religion.blogs.cnn.com)