If I, as a police department, put you on a secret list of possible pedophiles based on the fact that we saw you speaking to another person on that list, noticed you in a board game store patronized by many local young Magic: The Gathering fans, you were single with no children, and you were the brother of someone who once dated the sister of the cop who put you on the list, would you have a problem with that?

What if we weren't allowed to confirm or deny you were on the list, except to a prospective landlord or employer who filled out a form?

What if there were no way to find out those were the reasons I put you on the list, and no appeals process to be removed from the list?

What if you couldn't prove standing in court because there was no legal way to prove you were on the list at all without a friendly judge?

> You're inventing novel legal practices without precedent

Which is why people are forced to rely on the racial makeup of these horrifying lists in order to challenge them. The problem becomes a lot clearer if your local police force makes up a list of all Jews in the neighborhood (whatever criteria they decide to use, i.e. "valid reason") for special treatment.

edit: and, of course, what if the list leaks, and is used as an automated first step for disqualification by employers and landlords for the rest of your life?