Assuming this to be true (though see my reply about zoning below - I think this is an incomplete answer), then that's great, you have now cleared Chesterton's Fence, and are in a position to propose a replacement.

But notice how utterly different your argument is to the OP, who talked about excessive government regulation, regulatory capture and so on.

(and yes, one can make a case that codification of racism in law statutes is a kind of regulatory capture, but it's really not what most people mean when they use that term)