Singling out examples is good practice for getting the general population interested. Talking about vague groups isn't interesting. And there are ways of fixing this problem (courts, legislatures, general sentiment) that would carry over to other bad actors.
>Failure to recognize that makes their opinion at least incomplete, probably invalid.
It's invalid to imply that they are the only one with bad practices. That angle is designed to turn the general population against a single entity, without context, akin to a witch hunt.
>Failure to recognize that makes their opinion at least incomplete, probably invalid.
What part is invalid?