THE DEBLASIO EFFECT: You’re 45 percent more likely to be murdered in deBlasio’s Manhattan.

“City Hall better wake up soon,” a police source said. “When murders and shootings go up in Manhattan, everyone is affected,’’ he said, pointing out that crime impacts business, tourism and the city’s economy as a whole.

He said there are a variety of reasons, from the plummeting number of “stop-and-frisks’’ to the fact that the city needs more officers. “The cops’ hands are tied,’’ he said.

It’s regressing back to the Ed Koch/David Dinkins days.