The phrase "such atrocities" refers to extremely cruel or brutal acts that are highly shocking or horrifying. It describes acts that are deeply disturbing and go against moral standards. Full definition
This is why the governed must have the right to speak freely without fear of the government, to prevent such atrocities from occurring. (sbnation.com)
So we can talk of limited success in developing new norms and practices of civilian protection, and we can celebrate a new international court for such atrocities. (blog.politics.ox.ac.uk)
A genocide more recent than the Holocaust is providing new insights into why some people join in such atrocities. (sciencenews.org)