Why Are Informers Called Rats?
And why are spies called moles?
New York City police officers called attendees of the Brooklyn’s West Indian Day Parade “savages” and “animals” in a series of Facebook posts full of complaints about being assigned to the event. Some members of the online group warned others to watch their words, which could get them in trouble with “rats” from Internal Affairs, the New York Times reported on Monday. When did people start calling snitches “rats”?