You can’t be big-city mayor and alienate the cops — and that’s just as true now as it was under three-term New York City Mayor Ed Koch, or even a century ago.
“Koch was loved by the cops and always told all his successors that you must have the support of the cops, that the cops can be your best friend. If Koch were alive today that’s what he would tell Bill de Blasio,” said George Arzt, former press secretary to Koch, whose election in 1977 election greatly improved City Hall-police relations.

