Being lead-poisoned and senile in the extreme, Westwall thinks that showing a random bad actor shows the entire group is bad. He's that 'effin stupid.
Those not as butthurt and addled as Westwall understand that, given how every group has millions of people in it, you can always find a bad actor somewhere. Thus, searching for and highlighting such bad actors is dishonest and desperate.
Being dishonest and desperate, it's a staple tactic of the right. We've got posters here that spend their days posting about how they found a black or latino committing a crime.
The left doesn't do it anywhere nearly as often.
As is the case every time, moral high ground to the left.