I await the list from you.
"K, but he only gets pardoned when everyone who was the clear victim of racism is posthumously pardoned.
I await the list from you".
Red herring
This fallacy is committed when someone introduces irrelevant material to the issue being discussed, so that everyone's attention is diverted away from the points made, towards a different conclusion.
The best you can do is to right a wrong as it comes up. Take them one at a time, and only when there is clear and convincing evidence.