Bill de Blasio said he was going to be the most progressives mayor New York City has ever seen.
What is the result after nearly eight years?
New York is dirtier place. Crime has reached astronomical rates. People urinate and defecate in the streets without shame. That didn't happen during the Giuliani-Bloomberg era. In other words, NYC has turned into shit under progressive leadership. The same story can be retold in Los Angeles, San Francisco, Minnieapolis, Portland, Seattle, and Chicago.
Where is progressive leadership working?
All these cities are "real life" experiments. And the scientific data suggests progressive leadership leads to despair and a run of residents fleeing these places in droves.