Adams has been requesting photos of prospective city employees to be sent along with their resumes, ostensibly on grounds that he wants to be able to put faces with names.

Of nine current and past officials interviewed for this story, most voiced concern that the practice is already leading to staffing decisions based more on race and ethnicity than merit, even if they said they support a diversified workforce. And nearly all of them said it has added another obstacle to an already slow hiring process.

The person recalled receiving the instructions verbally, and being told by someone who works in the mayor’s office of appointments that Adams wanted agencies to hire people who “reflect the constituencies we serve.”