Well, not really.

Let's put more context in play.  But first, you're right.  Police should never pull over a car soley due to the occupants' race.

But let's say an older sports model Acura, tinted windows, playing hip hop music, was cruising through, say, a Santa Monica residential neighborhood at night.  As a resident, if I noticed that car passing by a few times, I'd call SMPD.  Wouldn't you?