From The Catholic Thing Blog, October 9, 2017:
Where did this “hate language” business come from anyhow? Its origin was in the now largely successful endeavor to overturn the moral structure of civil society. Generally speaking, this transformation was accomplished through the deft usage of “rights talk.” What was once called, on rational grounds, a disorder or vice became first tolerated, then finally a “right.” Once it became a “right,” then for anyone to call it a sin or evil became a slander, an attack on transformed human dignity and pride.
https://www.thecatholicthing.org/2017/10/09/on-hatred/