Police Commissioner Bill Bratton says spoiled millennials oppose his signature “Broken Windows” strategy because they weren’t even born yet during the city’s “bad old days.”

“They did not experience the New York of 1990,” the city’s top cop said Sunday during an interview on “The Answer,” John Catsimatidis’ 970 AM radio show.

“They’re experiencing the New York of 2015, which is a beautiful city, a safe city. That population group were not even alive, many of them, in 1990 when this city was going to hell in a handbasket.”

The law enforcement tactic — which targets low-level offenses like turnstile-jumping and public urination — is long credited with helping lower crime.

But for weeks, Bratton has been battling with the City Council to keep key aspects of it in place.

Bratton cited a Quinnipiac poll that found that 57 percent of city dwellers backed the policy, while only 38 did not.

The same poll found that voters between the ages of 18 and 34 opposed the Police Department’s quality-of-life enforcement, 54 percent to 45 percent.