What is your moral pet peeve?

As an example, my moral pet peeve is cheating. My mother was cheated on and that disloyalty my father showed left a very strong impression upon me of how awful his acts were.

Another example could be a strong aversion to stealing that goes above the normal hatred of theft.

So, what's your moral pet peeve?

What is your moral pet peeve?
What is your moral pet peeve?
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