Fun fact: that’s what the Devil’s Advocate actually was - a person appointed by the church to argue against canonizing someone by digging up any negative things about them that can be found:

https://en.m.wikipedia.org/wiki/Devil%27s_advocate

Ah yes! Unreturned book and racism are in same league of shit-talking. Just another art of down-playing the severity of actions/words by comparing it with something mundane.

> every bad word said, bad deeds

I suggest reading the whole comment before replying.

It's pretty blindingly obvious from the whole context that "unreturned books" is meant to be sarcastic.

I think that's the point of the person you replied to. An exceedingly minor issue such as "unreturned books" is used for sarcastic effect, but that implication that we should treat library loan violators in this way seems to indicate that our view of library loans should somehow be tied to or maintain consistency with our view of publicly espousing racism and/or sexism.