They can resign the nypd if they want.
They like being cops and doing the right thing, but they do have the brains to realize this is going to be a cluster*&ck and a half, if they stop arabs or muslims, or anyone not white, they'll get in trouble and if they stop white folks and that person files a complain, they'll still get in trouble.
Its asking someone to do the job with one hand behind your back, they already know how this turns out, and they also know how confrontational folks are over the dumbest things.
NYC is lucky no one becomes a cop for the money, you actually have got to want to do this, no one, ever becomes a cop in this city because of the pay or benefits.