u/tniats

I've got a degree in philosophy, childhood trauma, and a religious upbringing, all of which makes identifying a 'bad person' seem either complicated, or confusing, or straight up contradictory a la 'What Would Jesus Do?' So I'm wondering, since police officers spend plenty of time watching out for 'bad guys', what would you say is the defining characteristic of a 'bad person'? And are there any clear cut tells to look out for?