The relevant terms are “selective enforcement” and “selective prosecution”. Both are fully legal (as long as you don’t show bias against any of the protected classes) and commonly practiced.
As a trivial example try telling the traffic warden that she can’t give you a parking ticket because there is a bunch of illegally parked cars without tickets around.
That is empirically not true—well, unless you don’t consider the US to be a “semi-democratic society”.
We don’t have recordings of rich bankers doing cocaine. Saying “but they also do it” is very different from having the recorded proof of this fact.
The relevant terms are “selective enforcement” and “selective prosecution”. Both are fully legal (as long as you don’t show bias against any of the protected classes) and commonly practiced.
As a trivial example try telling the traffic warden that she can’t give you a parking ticket because there is a bunch of illegally parked cars without tickets around.