Sorry I don’t really buy that logic since some shithead right-winger bigot could just say a trans person can stop being an oppressed minority the moment they stop taking their hormone medications.
At the end of the day, the exact same sort of fallacious logic persists: A judgment of all within a population based on the perceptions of a subset of that population.
Logically, if I prove merely one cop is a good person, then the claim of all is simply wrong.