What fallacy is it when someone says:
Because everyone cheats, I also can cheat!
Or:
Because someone stole my money, I got penniless and had to stole from someone else!
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Sign up to join this communityI would call this is a "two wrongs make a right" fallacy. From the Wikipedia article: "Two wrongs make a right" has been considered as a fallacy of relevance, in which an allegation of wrongdoing is countered with a similar allegation.