Why hasn't Detroit ever owned up to its urban planning blunders?

[HazenPingree]

I'll gladly bring a shovel.
...
One combatant, identified only as "The Gnome," vowed to "pummel" the bodies of all Detroit mayors after Hazen Pingree [[1890-1897).
...

I would give my vote for sparing Jerome Cavanaugh, he was pretty cool.