https://www.catholiceducation.org/en/controversy/common-misconceptions/let-my-people-go-the-catholic-church-and-slavery.html

 https://etd.ohiolink.edu/!etd.send_file?accession=dayton1470605225&disposition=inline

A Confession by the Curmudgeon: Why I'm Leaving the Catholic Church Again 

[I should point out this is a piece of satire, lest anyone who doesn't actually click the link but only sees the title gets the wrong idea]